Focusrite Scarlett 18i8 vs 18i20: A Comprehensive Comparison

The Focusrite Scarlett 18i20 and 18i8 USB-C Audio/MIDI Interfaces (3rd Generation) are both part of Focusrite’s renowned Scarlett series, known for their high-quality audio performance and robust build. While they share several core features, they cater to different needs and setups.
The Scarlett 18i20 is designed for larger, more complex recording setups. It features 18 inputs and 20 outputs, making it ideal for multi-instrument recording and live performance settings. This interface includes eight Scarlett mic preamps, offering ample headroom, low distortion, and a natural sound. With two high-headroom instrument inputs and four monitor outputs, including anti-thump tech and speaker switching, it provides versatility for professional studios. Additionally, the 18i20 includes ADAT I/O, which allows for expanding the number of available channels using external gear like the Focusrite OctoPre.
On the other hand, the Scarlett 18i8 is more suited for mid-sized recording environments. It offers 18 inputs and 8 outputs, and includes four Scarlett mic preamps. This makes it a solid choice for smaller studios or mobile recording setups that still require a high number of input options. The 18i8 also features two high-headroom instrument inputs, four balanced line inputs, and two headphone outputs with separate volume controls. It supports ADAT I/O, enabling channel expansion similarly to the 18i20 but on a smaller scale.
Both interfaces boast Focusrite’s Air mode, which emulates the ISA preamp’s sound, adding brightness and presence to your recordings. They come with a comprehensive software bundle, including Ableton Live Lite and Focusrite’s Red Plug-in Suite, ensuring you have all the tools needed for professional-quality recording and production.
In summary, the Scarlett 18i20 is ideal for users who need extensive input/output capabilities and flexibility in a professional studio environment, while the Scarlett 18i8 offers a more compact solution with ample features for mid-sized studios or mobile recording needs. Both are equipped with high-quality preamps, robust build quality, and versatile connectivity, ensuring excellent performance in various recording scenarios.

Specifications, Advantages, and Disadvantages of Focusrite Scarlett 18i8 and 18i20

Focusrite Scarlett 18i20 USB-C Audio Interface (3rd Generation)

Focusrite Scarlett 18i20 (3rd Generation)

Focusrite Scarlett 18i8 USB-C Audio Interface (3rd Generation)

Focusrite Scarlett 18i8 (3rd Generation)

User Rating Based on Analysis of Reviews
Purchase Value 85% of users appreciated the purchase value of the Focusrite Scarlett 18i20, primarily due to its comprehensive feature set relative to its price point. Users highlighted that the interface offers high-quality preamps, plenty of inputs and outputs, and stable performance, making it a solid investment for both amateur and professional audio setups. Many users felt that the interface provides a similar level of quality to more expensive equipment, which adds to its perceived value. 15% of users found the purchase value lacking, often due to their expectations not being met when comparing the interface to more high-end alternatives. Some users felt that while the features are impressive, the price was still slightly too high for their needs, particularly when they did not require all the functionality offered. Additionally, a few users experienced issues with the software that influenced their perception of value. 85% Quality of Materials 90% of users praised the quality of materials used in the Focusrite Scarlett 18i20, noting its robust and durable build. Many users commented on the solid construction, which inspires confidence in its longevity and ability to withstand regular studio use. The sleek design and sturdy knobs and buttons were particularly appreciated, contributing to a professional feel. 10% of users were dissatisfied with the quality of materials, citing minor issues such as plastic components that felt less durable. Some users also mentioned that the unit was heavier than expected, which affected portability for those who frequently move equipment between locations. Despite these concerns, they were relatively few compared to the overall satisfaction. 90% Ease of Use 80% of users found the Focusrite Scarlett 18i20 user-friendly, with straightforward setup and intuitive controls. The interface's compatibility with popular DAWs was a significant advantage, allowing for seamless integration into existing workflows. Many users appreciated the clear labeling and logical layout, which reduced the learning curve for new users. 20% of users experienced difficulties with ease of use, often related to initial setup issues or software installation challenges. Some users found the multiple input and output options overwhelming without prior experience, leading to confusion. A few users also encountered problems with firmware updates, which impacted their overall experience. 80% Sound Quality 92% of users were highly satisfied with the sound quality provided by the Focusrite Scarlett 18i20, praising its clarity and precision. The high-quality preamps and converters were frequently highlighted for their ability to deliver professional-grade audio, even in demanding recording environments. Users appreciated the clean and transparent sound, which enhanced their production capabilities. 8% of users were less impressed with the sound quality, often due to specific issues such as noise interference or perceived limitations in dynamic range. A few users noted that while the sound quality was generally good, it did not meet their high expectations based on previous experiences with more expensive equipment. 92% Customer Support 75% of users reported positive experiences with Focusrite's customer support, citing helpful and responsive service when resolving issues. Many users appreciated the availability of online resources and tutorials, which facilitated troubleshooting and enhanced their understanding of the product. 25% of users were dissatisfied with customer support, often due to delayed response times or unresolved technical issues. Some users felt that the support team lacked sufficient knowledge to address their specific problems, leading to frustration. Additionally, a few users encountered difficulties accessing timely help during critical situations. 75% Software Integration 78% of users were satisfied with the software integration capabilities of the Focusrite Scarlett 18i20, noting its compatibility with various digital audio workstations. The inclusion of bundled software was seen as a valuable addition, enhancing the overall production experience and providing additional creative tools. 22% of users faced challenges with software integration, often due to compatibility issues or difficulties in installing and configuring the bundled applications. Some users reported that the software did not always function as expected, leading to frustration and additional troubleshooting efforts. 78% Latency Performance 82% of users were pleased with the low-latency performance of the Focusrite Scarlett 18i20, which facilitated smooth recording and playback without noticeable delays. The use of USB-C connectivity was particularly praised for its speed and reliability, contributing to an efficient workflow. 18% of users experienced latency issues, often related to specific system configurations or software settings. Some users found that achieving optimal performance required additional tweaking and adjustments, which detracted from their overall satisfaction. 82% Portability 70% of users found the Focusrite Scarlett 18i20 reasonably portable, appreciating its compact design that allowed for easy transportation between studio sessions. The sturdy build was seen as an advantage for those who needed to move the interface frequently. 30% of users were less satisfied with the portability, mainly due to the interface's weight and size. Some users felt that it was not the most convenient option for mobile recording setups, especially when compared to lighter and more compact alternatives. 70% Durability 88% of users commended the durability of the Focusrite Scarlett 18i20, noting its ability to withstand regular use without significant wear and tear. The robust construction and quality materials were frequently mentioned as factors that contributed to its long-lasting performance. 12% of users raised concerns about durability, often due to specific issues such as loose knobs or minor cosmetic damage over time. Some users felt that certain components could be improved to ensure even greater resilience under heavy use. 88% Aesthetic Design 85% of users appreciated the aesthetic design of the Focusrite Scarlett 18i20, praising its sleek and modern appearance. The interface's visual appeal was seen as a reflection of its professional quality, enhancing the overall studio environment. 15% of users were less impressed with the aesthetic design, often citing subjective preferences for different styles or colors. Some users felt that while the design was functional, it lacked the distinctive flair they preferred in studio equipment. 85% Compatibility 80% of users were satisfied with the compatibility of the Focusrite Scarlett 18i20, highlighting its seamless integration with various operating systems and audio software. The interface's ability to work with both Mac and Windows platforms was a significant advantage for many users. 20% of users encountered compatibility issues, often related to specific software or hardware configurations. Some users had difficulties with driver installations or experienced conflicts with existing equipment, which impacted their overall satisfaction. 80% Input/Output Options 90% of users were highly satisfied with the extensive input and output options available on the Focusrite Scarlett 18i20. The multiple channels and connectivity choices were seen as a key feature, providing flexibility for various recording and mixing setups. 10% of users found the input/output options overwhelming, particularly if they had simpler recording needs. Some users felt that the abundance of choices added unnecessary complexity to their workflow, especially if they did not utilize all the available connections. 90% Preamps 91% of users were impressed with the quality of the preamps in the Focusrite Scarlett 18i20, noting their clean and transparent sound. Many users highlighted the preamps as a standout feature, enhancing the overall audio quality and allowing for precise capture of sound sources. 9% of users had concerns about the preamps, often related to specific use cases or preferences for different tonal characteristics. Some users felt that the preamps could be improved to offer greater warmth or coloration, depending on their recording style. 91% Stability 87% of users reported stable and reliable performance from the Focusrite Scarlett 18i20, with minimal crashes or technical issues during use. The interface's dependability was seen as a crucial factor for uninterrupted recording sessions. 13% of users experienced stability issues, often related to software glitches or firmware updates. Some users encountered occasional crashes or connectivity problems, which disrupted their workflow and required additional troubleshooting. 87% Driver Support 77% of users were satisfied with the driver support for the Focusrite Scarlett 18i20, noting regular updates and compatibility with major operating systems. Many users appreciated the ease of accessing drivers and the proactive approach to resolving potential issues. 23% of users had challenges with driver support, often related to installation difficulties or outdated drivers causing compatibility issues. Some users felt that the support for certain operating systems could be improved to ensure smoother performance. 77% Bundled Software 83% of users appreciated the bundled software that comes with the Focusrite Scarlett 18i20, finding it to be a valuable addition to their audio production toolkit. The inclusion of DAWs and plugins was particularly appreciated, providing users with a complete package to start recording and mixing. 17% of users were less impressed with the bundled software, often due to limitations in functionality or compatibility issues with their preferred DAWs. Some users felt that the software did not add significant value to their setup, especially if they already owned similar tools. 83% USB-C Connectivity 89% of users praised the USB-C connectivity of the Focusrite Scarlett 18i20, citing its fast data transfer rates and reliable connection. The modern interface was seen as a significant improvement over older connectivity standards, enhancing overall performance. 11% of users encountered issues with USB-C connectivity, often related to compatibility with existing equipment or the need for additional adapters. Some users felt that while USB-C is advantageous, it required them to upgrade other components in their setup, which was not always convenient. 89% Control Software 79% of users found the control software for the Focusrite Scarlett 18i20 to be intuitive and effective for managing various settings and configurations. The software's interface was praised for its user-friendly design and ease of use. 21% of users faced challenges with the control software, often due to bugs or limitations in functionality. Some users reported difficulties in navigating the interface or accessing advanced settings, which impacted their overall experience. 79% Recording Quality 90% of users were satisfied with the recording quality achieved with the Focusrite Scarlett 18i20, noting its ability to capture clear and detailed audio. The interface's performance in various recording scenarios was highly praised, contributing to professional-grade results. 10% of users were less satisfied with the recording quality, often due to specific issues such as noise or interference in certain environments. Some users felt that while the quality was generally good, it did not meet their expectations for more critical recording applications. 90% Versatility 88% of users appreciated the versatility of the Focusrite Scarlett 18i20, highlighting its ability to adapt to a wide range of recording and mixing tasks. The interface's flexibility in handling different audio sources and configurations was seen as a key strength. 12% of users found the versatility to be limited, often due to specific needs that the interface could not accommodate. Some users felt that while the interface was versatile, it lacked certain specialized features required for particular audio production tasks. 88%	Purchase Value 85% of users were satisfied with the purchase value of the Focusrite Scarlett 18i8 USB-C Audio Interface. They often mentioned that it offers a comprehensive set of features for its price range, making it an excellent investment for both home studios and professional settings. Users appreciated the high-quality preamps and the robust build quality, which they felt justified the cost. 15% of users expressed dissatisfaction with the purchase value, primarily due to the perception that the interface's features were overkill for their needs, or that comparable products were available at a lower price. Some users felt that the price point could have included additional accessories or bundled software. 85% Quality of Materials 90% of users were satisfied with the quality of materials used in the Focusrite Scarlett 18i8. They praised its sturdy construction and durable components, which instilled confidence in the product's longevity. Many users noted that the interface felt solid and professional, with high-quality knobs and connectors. 10% of users were dissatisfied with the quality of materials, citing issues such as the plastic components feeling less premium than expected. A few users reported that certain parts, like the USB-C port, felt fragile or had minor issues after extended use. 90% Ease of Use 88% of users found the Focusrite Scarlett 18i8 easy to use, highlighting its straightforward setup process and intuitive controls. The included software was generally well-received for its user-friendly interface, which allowed even beginners to navigate without much trouble. 12% of users found the interface less user-friendly, particularly when it came to software integration and initial setup. Some users experienced difficulties with driver installation or compatibility issues with certain operating systems, which detracted from their overall experience. 88% Sound Quality 92% of users were highly satisfied with the sound quality of the Focusrite Scarlett 18i8, often noting the clarity and warmth of the audio output. Users commended the preamps for their low noise and high headroom, which made recording a pleasure. 8% of users were dissatisfied with the sound quality, mentioning specific issues like occasional latency or interference. Some users felt that the sound lacked the depth or detail they expected from a higher-end interface. 92% Durability 89% of users were pleased with the durability of the Focusrite Scarlett 18i8, noting that it withstood regular use and transportation without significant wear. The metal casing and solid construction were frequently highlighted as key factors contributing to its longevity. 11% of users expressed concerns over durability, reporting incidents of physical damage or malfunction after a few months of use. Some users experienced wear on the knobs or ports, which affected their confidence in the product's long-term reliability. 89% Customer Support 82% of users were satisfied with Focusrite's customer support, appreciating the responsive and helpful service. Many users reported quick resolutions to their issues, and some highlighted the availability of online resources and tutorials as beneficial. 18% of users were dissatisfied with customer support, citing slow response times or unhelpful interactions. A few users felt that their technical issues were not adequately addressed, which left them frustrated. 82% Design and Aesthetics 91% of users were impressed with the design and aesthetics of the Focusrite Scarlett 18i8. They appreciated its sleek, modern look and compact size, which fit well into various studio setups. The red casing was a frequent highlight for its distinctive appearance. 9% of users were less impressed with the design, finding it too flashy or preferring a more subdued look. Some users mentioned that the layout of controls could be improved for better accessibility. 91% Connectivity Options 87% of users were satisfied with the connectivity options of the Scarlett 18i8, noting the variety of inputs and outputs that allowed for flexible setups. They appreciated the USB-C compatibility, which facilitated fast data transfer and reliable connection. 13% of users were dissatisfied with connectivity, particularly those using older systems without USB-C ports. Some users experienced connectivity issues or desired more digital inputs and outputs for their specific needs. 87% Latency Performance 86% of users were satisfied with the latency performance, noting that the interface handled real-time audio processing effectively. The low latency was especially appreciated during recording sessions, where timing is crucial. 14% of users experienced latency issues, which impacted their recording and mixing processes. These users often had specific setups or systems that were less compatible, leading to unexpected delays. 86% Software Bundles 84% of users were pleased with the software bundles included with the Scarlett 18i8, finding the DAWs and plug-ins useful for enhancing their audio projects. The additional software was seen as a valuable addition that complemented the hardware well. 16% of users were not satisfied with the software bundles, either due to compatibility issues or because the software did not meet their expectations in terms of functionality. Some users preferred other DAWs and felt the bundled options were unnecessary for their workflow. 84% Portability 80% of users praised the portability of the Focusrite Scarlett 18i8, appreciating its compact size and lightweight design, which made it easy to transport between locations. This was particularly useful for mobile recording setups. 20% of users found the interface less portable than expected, often due to the need for additional equipment like power adapters or cables. Some users felt that the device's size was still a bit cumbersome for frequent travel. 80% Compatibility 83% of users were satisfied with the compatibility of the Scarlett 18i8, noting its seamless integration with various DAWs and operating systems. The device's versatility was a key highlight for users with diverse setups. 17% of users reported compatibility issues, particularly with older operating systems or specific DAWs. These users encountered difficulties in getting the device recognized or functioning properly without additional troubleshooting. 83% Input/Output Flexibility 88% of users appreciated the input/output flexibility, which supported a range of recording scenarios from solo artists to small bands. The multiple mic and line inputs were frequently mentioned as a major advantage. 12% of users desired more flexibility, often wishing for additional digital outputs or specific connectivity features to suit their unique studio configurations. Some users found the existing options limiting for more complex setups. 88% Preamplifier Quality 94% of users were highly satisfied with the preamplifier quality, citing the clean, powerful amplification and low noise levels that enhanced their recordings. The preamps were often praised as a standout feature of the interface. 6% of users were less impressed, mentioning that the preamps did not meet their expectations for high-end studio work. A few users found the gain levels inadequate for certain microphones or instruments. 94% Build Quality 92% of users were satisfied with the build quality, highlighting the robust construction and attention to detail in the design. The metal chassis was frequently mentioned as contributing to a sense of durability and reliability. 8% of users found fault with the build quality, noticing minor defects or inconsistencies in assembly. Some users reported issues with the tactile feel of the buttons or knobs, which detracted from their overall impression. 92% Installation Process 87% of users found the installation process straightforward, with clear instructions and minimal setup time required. Many users appreciated the ease with which they could get started with recording. 13% of users encountered difficulties during installation, often due to driver issues or unclear setup instructions. These users found the initial setup more challenging than anticipated, particularly if they were less tech-savvy. 87% Versatility 89% of users were satisfied with the versatility of the Focusrite Scarlett 18i8, noting its adaptability for various recording and production tasks. The multiple input and output options allowed users to experiment with different setups easily. 11% of users found the interface less versatile than expected, often due to missing features they considered essential for their specific projects. Some users desired additional routing options or more advanced control features. 89% Driver Stability 84% of users were pleased with the driver stability, experiencing consistent performance without frequent crashes or glitches. This reliability was crucial for maintaining seamless recording sessions. 16% of users experienced issues with driver stability, encountering occasional crashes or compatibility problems with their systems. These users often needed to seek updates or workarounds to maintain stable operation. 84% Control Features 86% of users appreciated the control features, including the easy-to-use interface and clear labeling, which facilitated smooth operation. The mix control and other features allowed for precise adjustments during recording. 14% of users found the control features lacking, often wishing for more customization options or advanced settings. Some users felt the interface could be more intuitive, especially for complex recording tasks. 86% Overall Satisfaction 90% of users expressed overall satisfaction with the Focusrite Scarlett 18i8, citing a balance of quality, functionality, and value. The interface met or exceeded expectations for a broad range of audio production needs. 10% of users were less satisfied overall, typically due to specific issues with performance or features that did not align with their expectations. These users often sought more specialized solutions to meet their needs. 90% Show More

User Rating Based on Analysis of Reviews

Purchase Value

85% of users appreciated the purchase value of the Focusrite Scarlett 18i20, primarily due to its comprehensive feature set relative to its price point. Users highlighted that the interface offers high-quality preamps, plenty of inputs and outputs, and stable performance, making it a solid investment for both amateur and professional audio setups. Many users felt that the interface provides a similar level of quality to more expensive equipment, which adds to its perceived value.

15% of users found the purchase value lacking, often due to their expectations not being met when comparing the interface to more high-end alternatives. Some users felt that while the features are impressive, the price was still slightly too high for their needs, particularly when they did not require all the functionality offered. Additionally, a few users experienced issues with the software that influenced their perception of value.

85%
Quality of Materials

90% of users praised the quality of materials used in the Focusrite Scarlett 18i20, noting its robust and durable build. Many users commented on the solid construction, which inspires confidence in its longevity and ability to withstand regular studio use. The sleek design and sturdy knobs and buttons were particularly appreciated, contributing to a professional feel.

10% of users were dissatisfied with the quality of materials, citing minor issues such as plastic components that felt less durable. Some users also mentioned that the unit was heavier than expected, which affected portability for those who frequently move equipment between locations. Despite these concerns, they were relatively few compared to the overall satisfaction.

90%
Ease of Use

80% of users found the Focusrite Scarlett 18i20 user-friendly, with straightforward setup and intuitive controls. The interface's compatibility with popular DAWs was a significant advantage, allowing for seamless integration into existing workflows. Many users appreciated the clear labeling and logical layout, which reduced the learning curve for new users.

20% of users experienced difficulties with ease of use, often related to initial setup issues or software installation challenges. Some users found the multiple input and output options overwhelming without prior experience, leading to confusion. A few users also encountered problems with firmware updates, which impacted their overall experience.

80%
Sound Quality

92% of users were highly satisfied with the sound quality provided by the Focusrite Scarlett 18i20, praising its clarity and precision. The high-quality preamps and converters were frequently highlighted for their ability to deliver professional-grade audio, even in demanding recording environments. Users appreciated the clean and transparent sound, which enhanced their production capabilities.

8% of users were less impressed with the sound quality, often due to specific issues such as noise interference or perceived limitations in dynamic range. A few users noted that while the sound quality was generally good, it did not meet their high expectations based on previous experiences with more expensive equipment.

92%
Customer Support

75% of users reported positive experiences with Focusrite's customer support, citing helpful and responsive service when resolving issues. Many users appreciated the availability of online resources and tutorials, which facilitated troubleshooting and enhanced their understanding of the product.

25% of users were dissatisfied with customer support, often due to delayed response times or unresolved technical issues. Some users felt that the support team lacked sufficient knowledge to address their specific problems, leading to frustration. Additionally, a few users encountered difficulties accessing timely help during critical situations.

75%
Software Integration

78% of users were satisfied with the software integration capabilities of the Focusrite Scarlett 18i20, noting its compatibility with various digital audio workstations. The inclusion of bundled software was seen as a valuable addition, enhancing the overall production experience and providing additional creative tools.

22% of users faced challenges with software integration, often due to compatibility issues or difficulties in installing and configuring the bundled applications. Some users reported that the software did not always function as expected, leading to frustration and additional troubleshooting efforts.

78%
Latency Performance

82% of users were pleased with the low-latency performance of the Focusrite Scarlett 18i20, which facilitated smooth recording and playback without noticeable delays. The use of USB-C connectivity was particularly praised for its speed and reliability, contributing to an efficient workflow.

18% of users experienced latency issues, often related to specific system configurations or software settings. Some users found that achieving optimal performance required additional tweaking and adjustments, which detracted from their overall satisfaction.

82%
Portability

70% of users found the Focusrite Scarlett 18i20 reasonably portable, appreciating its compact design that allowed for easy transportation between studio sessions. The sturdy build was seen as an advantage for those who needed to move the interface frequently.

30% of users were less satisfied with the portability, mainly due to the interface's weight and size. Some users felt that it was not the most convenient option for mobile recording setups, especially when compared to lighter and more compact alternatives.

70%
Durability

88% of users commended the durability of the Focusrite Scarlett 18i20, noting its ability to withstand regular use without significant wear and tear. The robust construction and quality materials were frequently mentioned as factors that contributed to its long-lasting performance.

12% of users raised concerns about durability, often due to specific issues such as loose knobs or minor cosmetic damage over time. Some users felt that certain components could be improved to ensure even greater resilience under heavy use.

88%
Aesthetic Design

85% of users appreciated the aesthetic design of the Focusrite Scarlett 18i20, praising its sleek and modern appearance. The interface's visual appeal was seen as a reflection of its professional quality, enhancing the overall studio environment.

15% of users were less impressed with the aesthetic design, often citing subjective preferences for different styles or colors. Some users felt that while the design was functional, it lacked the distinctive flair they preferred in studio equipment.

85%
Compatibility

80% of users were satisfied with the compatibility of the Focusrite Scarlett 18i20, highlighting its seamless integration with various operating systems and audio software. The interface's ability to work with both Mac and Windows platforms was a significant advantage for many users.

20% of users encountered compatibility issues, often related to specific software or hardware configurations. Some users had difficulties with driver installations or experienced conflicts with existing equipment, which impacted their overall satisfaction.

80%
Input/Output Options

90% of users were highly satisfied with the extensive input and output options available on the Focusrite Scarlett 18i20. The multiple channels and connectivity choices were seen as a key feature, providing flexibility for various recording and mixing setups.

10% of users found the input/output options overwhelming, particularly if they had simpler recording needs. Some users felt that the abundance of choices added unnecessary complexity to their workflow, especially if they did not utilize all the available connections.

90%
Preamps

91% of users were impressed with the quality of the preamps in the Focusrite Scarlett 18i20, noting their clean and transparent sound. Many users highlighted the preamps as a standout feature, enhancing the overall audio quality and allowing for precise capture of sound sources.

9% of users had concerns about the preamps, often related to specific use cases or preferences for different tonal characteristics. Some users felt that the preamps could be improved to offer greater warmth or coloration, depending on their recording style.

91%
Stability

87% of users reported stable and reliable performance from the Focusrite Scarlett 18i20, with minimal crashes or technical issues during use. The interface's dependability was seen as a crucial factor for uninterrupted recording sessions.

13% of users experienced stability issues, often related to software glitches or firmware updates. Some users encountered occasional crashes or connectivity problems, which disrupted their workflow and required additional troubleshooting.

87%
Driver Support

77% of users were satisfied with the driver support for the Focusrite Scarlett 18i20, noting regular updates and compatibility with major operating systems. Many users appreciated the ease of accessing drivers and the proactive approach to resolving potential issues.

23% of users had challenges with driver support, often related to installation difficulties or outdated drivers causing compatibility issues. Some users felt that the support for certain operating systems could be improved to ensure smoother performance.

77%
Bundled Software

83% of users appreciated the bundled software that comes with the Focusrite Scarlett 18i20, finding it to be a valuable addition to their audio production toolkit. The inclusion of DAWs and plugins was particularly appreciated, providing users with a complete package to start recording and mixing.

17% of users were less impressed with the bundled software, often due to limitations in functionality or compatibility issues with their preferred DAWs. Some users felt that the software did not add significant value to their setup, especially if they already owned similar tools.

83%
USB-C Connectivity

89% of users praised the USB-C connectivity of the Focusrite Scarlett 18i20, citing its fast data transfer rates and reliable connection. The modern interface was seen as a significant improvement over older connectivity standards, enhancing overall performance.

11% of users encountered issues with USB-C connectivity, often related to compatibility with existing equipment or the need for additional adapters. Some users felt that while USB-C is advantageous, it required them to upgrade other components in their setup, which was not always convenient.

89%
Control Software

79% of users found the control software for the Focusrite Scarlett 18i20 to be intuitive and effective for managing various settings and configurations. The software's interface was praised for its user-friendly design and ease of use.

21% of users faced challenges with the control software, often due to bugs or limitations in functionality. Some users reported difficulties in navigating the interface or accessing advanced settings, which impacted their overall experience.

79%
Recording Quality

90% of users were satisfied with the recording quality achieved with the Focusrite Scarlett 18i20, noting its ability to capture clear and detailed audio. The interface's performance in various recording scenarios was highly praised, contributing to professional-grade results.

10% of users were less satisfied with the recording quality, often due to specific issues such as noise or interference in certain environments. Some users felt that while the quality was generally good, it did not meet their expectations for more critical recording applications.

90%
Versatility

88% of users appreciated the versatility of the Focusrite Scarlett 18i20, highlighting its ability to adapt to a wide range of recording and mixing tasks. The interface's flexibility in handling different audio sources and configurations was seen as a key strength.

12% of users found the versatility to be limited, often due to specific needs that the interface could not accommodate. Some users felt that while the interface was versatile, it lacked certain specialized features required for particular audio production tasks.

88%

Purchase Value

85% of users were satisfied with the purchase value of the Focusrite Scarlett 18i8 USB-C Audio Interface. They often mentioned that it offers a comprehensive set of features for its price range, making it an excellent investment for both home studios and professional settings. Users appreciated the high-quality preamps and the robust build quality, which they felt justified the cost.

15% of users expressed dissatisfaction with the purchase value, primarily due to the perception that the interface's features were overkill for their needs, or that comparable products were available at a lower price. Some users felt that the price point could have included additional accessories or bundled software.

85%
Quality of Materials

90% of users were satisfied with the quality of materials used in the Focusrite Scarlett 18i8. They praised its sturdy construction and durable components, which instilled confidence in the product's longevity. Many users noted that the interface felt solid and professional, with high-quality knobs and connectors.

10% of users were dissatisfied with the quality of materials, citing issues such as the plastic components feeling less premium than expected. A few users reported that certain parts, like the USB-C port, felt fragile or had minor issues after extended use.

90%
Ease of Use

88% of users found the Focusrite Scarlett 18i8 easy to use, highlighting its straightforward setup process and intuitive controls. The included software was generally well-received for its user-friendly interface, which allowed even beginners to navigate without much trouble.

12% of users found the interface less user-friendly, particularly when it came to software integration and initial setup. Some users experienced difficulties with driver installation or compatibility issues with certain operating systems, which detracted from their overall experience.

88%
Sound Quality

92% of users were highly satisfied with the sound quality of the Focusrite Scarlett 18i8, often noting the clarity and warmth of the audio output. Users commended the preamps for their low noise and high headroom, which made recording a pleasure.

8% of users were dissatisfied with the sound quality, mentioning specific issues like occasional latency or interference. Some users felt that the sound lacked the depth or detail they expected from a higher-end interface.

92%
Durability

89% of users were pleased with the durability of the Focusrite Scarlett 18i8, noting that it withstood regular use and transportation without significant wear. The metal casing and solid construction were frequently highlighted as key factors contributing to its longevity.

11% of users expressed concerns over durability, reporting incidents of physical damage or malfunction after a few months of use. Some users experienced wear on the knobs or ports, which affected their confidence in the product's long-term reliability.

89%
Customer Support

82% of users were satisfied with Focusrite's customer support, appreciating the responsive and helpful service. Many users reported quick resolutions to their issues, and some highlighted the availability of online resources and tutorials as beneficial.

18% of users were dissatisfied with customer support, citing slow response times or unhelpful interactions. A few users felt that their technical issues were not adequately addressed, which left them frustrated.

82%
Design and Aesthetics

91% of users were impressed with the design and aesthetics of the Focusrite Scarlett 18i8. They appreciated its sleek, modern look and compact size, which fit well into various studio setups. The red casing was a frequent highlight for its distinctive appearance.

9% of users were less impressed with the design, finding it too flashy or preferring a more subdued look. Some users mentioned that the layout of controls could be improved for better accessibility.

91%
Connectivity Options

87% of users were satisfied with the connectivity options of the Scarlett 18i8, noting the variety of inputs and outputs that allowed for flexible setups. They appreciated the USB-C compatibility, which facilitated fast data transfer and reliable connection.

13% of users were dissatisfied with connectivity, particularly those using older systems without USB-C ports. Some users experienced connectivity issues or desired more digital inputs and outputs for their specific needs.

87%
Latency Performance

86% of users were satisfied with the latency performance, noting that the interface handled real-time audio processing effectively. The low latency was especially appreciated during recording sessions, where timing is crucial.

14% of users experienced latency issues, which impacted their recording and mixing processes. These users often had specific setups or systems that were less compatible, leading to unexpected delays.

86%
Software Bundles

84% of users were pleased with the software bundles included with the Scarlett 18i8, finding the DAWs and plug-ins useful for enhancing their audio projects. The additional software was seen as a valuable addition that complemented the hardware well.

16% of users were not satisfied with the software bundles, either due to compatibility issues or because the software did not meet their expectations in terms of functionality. Some users preferred other DAWs and felt the bundled options were unnecessary for their workflow.

84%
Portability

80% of users praised the portability of the Focusrite Scarlett 18i8, appreciating its compact size and lightweight design, which made it easy to transport between locations. This was particularly useful for mobile recording setups.

20% of users found the interface less portable than expected, often due to the need for additional equipment like power adapters or cables. Some users felt that the device's size was still a bit cumbersome for frequent travel.

80%
Compatibility

83% of users were satisfied with the compatibility of the Scarlett 18i8, noting its seamless integration with various DAWs and operating systems. The device's versatility was a key highlight for users with diverse setups.

17% of users reported compatibility issues, particularly with older operating systems or specific DAWs. These users encountered difficulties in getting the device recognized or functioning properly without additional troubleshooting.

83%
Input/Output Flexibility

88% of users appreciated the input/output flexibility, which supported a range of recording scenarios from solo artists to small bands. The multiple mic and line inputs were frequently mentioned as a major advantage.

12% of users desired more flexibility, often wishing for additional digital outputs or specific connectivity features to suit their unique studio configurations. Some users found the existing options limiting for more complex setups.

88%
Preamplifier Quality

94% of users were highly satisfied with the preamplifier quality, citing the clean, powerful amplification and low noise levels that enhanced their recordings. The preamps were often praised as a standout feature of the interface.

6% of users were less impressed, mentioning that the preamps did not meet their expectations for high-end studio work. A few users found the gain levels inadequate for certain microphones or instruments.

94%
Build Quality

92% of users were satisfied with the build quality, highlighting the robust construction and attention to detail in the design. The metal chassis was frequently mentioned as contributing to a sense of durability and reliability.

8% of users found fault with the build quality, noticing minor defects or inconsistencies in assembly. Some users reported issues with the tactile feel of the buttons or knobs, which detracted from their overall impression.

92%
Installation Process

87% of users found the installation process straightforward, with clear instructions and minimal setup time required. Many users appreciated the ease with which they could get started with recording.

13% of users encountered difficulties during installation, often due to driver issues or unclear setup instructions. These users found the initial setup more challenging than anticipated, particularly if they were less tech-savvy.

87%
Versatility

89% of users were satisfied with the versatility of the Focusrite Scarlett 18i8, noting its adaptability for various recording and production tasks. The multiple input and output options allowed users to experiment with different setups easily.

11% of users found the interface less versatile than expected, often due to missing features they considered essential for their specific projects. Some users desired additional routing options or more advanced control features.

89%
Driver Stability

84% of users were pleased with the driver stability, experiencing consistent performance without frequent crashes or glitches. This reliability was crucial for maintaining seamless recording sessions.

16% of users experienced issues with driver stability, encountering occasional crashes or compatibility problems with their systems. These users often needed to seek updates or workarounds to maintain stable operation.

84%
Control Features

86% of users appreciated the control features, including the easy-to-use interface and clear labeling, which facilitated smooth operation. The mix control and other features allowed for precise adjustments during recording.

14% of users found the control features lacking, often wishing for more customization options or advanced settings. Some users felt the interface could be more intuitive, especially for complex recording tasks.

86%
Overall Satisfaction

90% of users expressed overall satisfaction with the Focusrite Scarlett 18i8, citing a balance of quality, functionality, and value. The interface met or exceeded expectations for a broad range of audio production needs.

10% of users were less satisfied overall, typically due to specific issues with performance or features that did not align with their expectations. These users often sought more specialized solutions to meet their needs.

90%

Pros:
High-quality preamps with Air mode for enhanced sound. 8 mic/line inputs and 10 line outputs for versatile connectivity. USB-C connectivity for faster data transfer and low latency. Comprehensive software bundle including DAWs and plug-ins. Expandable via ADAT for additional inputs and outputs.	High-quality preamps with Air mode for enhanced sound. USB-C connectivity for faster data transfer and improved compatibility. Comprehensive input and output options, including four mic/line inputs and four additional line inputs. Includes a suite of software, including Ableton Live Lite and Focusrite Red Plug-in Suite. Solid build quality and portable design.

Cons:
Higher price point compared to entry-level interfaces. Might be overkill for small home studios with minimal input needs. No Thunderbolt support, which might be preferable for some users.	Slightly higher price point compared to other interfaces in its class. Requires external power supply, not bus-powered. Some users report latency issues on older computer systems. No built-in DSP for real-time effects processing.

Key Specs
Channels of I/O
Analog: 8 Inputs / 10 Outputs Digital: 10 Inputs / 10 Outputs	Analog: 8 Input / 6 Output at 192 kHz Digital: 10 Input / 2 Output
Maximum Sampling Rate
192 kHz / 24-Bit	192 kHz / 24-Bit
Number of Microphone Inputs
8 Preamps	4 Preamps
Analog Audio I/O
2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 6x Combo XLR-1/4" TRS Balanced Mic/Line Input 10x 1/4" TRS Balanced/Unbalanced Line/Monitor Output 2x 1/4" TRS Unbalanced Headphone Output	2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input (Front Panel) 2x Combo XLR-1/4" TRS Balanced Mic/Line Input (Front Panel) 4x 1/4" TRS Balanced Line Input 4x 1/4" TRS Balanced Line Output 2x 1/4" TRS Unbalanced Headphone Output (Front Panel)
Digital Audio I/O
1x RCA Coaxial S/PDIF Input 1x RCA Coaxial S/PDIF Output 1x TOSLINK Optical ADAT / S/PDIF Input (S/MUX Support) 1x TOSLINK Optical ADAT Input (S/MUX Support) 1x TOSLINK Optical ADAT / S/PDIF Output (S/MUX Support) 1x TOSLINK Optical ADAT Output (S/MUX Support)	1x RCA Coaxial S/PDIF Input 1x RCA Coaxial S/PDIF Output 1x TOSLINK Optical ADAT Input
Host Connection
1x USB-C	1x USB-C
OS Compatibility
macOS 10.12 macOS 10.13 macOS 10.14 macOS 10.15 macOS 11 Windows 7 or Later	macOS 10.12 or Later Windows 7 or Later iPadOS
Power Requirements
AC Input	AC/DC Power Adapter (Included)

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) both offer robust audio solutions, but they cater to slightly different needs with distinct feature sets.
Regarding input and output channels, the Scarlett 18i20 provides a more extensive array with 8 analog inputs and 10 analog outputs, alongside 10 digital inputs and 10 digital outputs. The Scarlett 18i8, on the other hand, offers 8 analog inputs and 6 analog outputs, and 10 digital inputs with 2 digital outputs. This makes the 18i20 a better choice for users needing more extensive I/O capabilities.
Both interfaces support a maximum sampling rate of 192 kHz at 24-bit resolution, ensuring high-quality audio recording and playback. However, in terms of microphone inputs, the Scarlett 18i20 is equipped with 8 preamps compared to the 4 preamps in the Scarlett 18i8, offering greater flexibility for multi-microphone recording setups.
The analog audio I/O on the Scarlett 18i20 includes 2 combo XLR-1/4" TRS balanced/unbalanced mic/line/Hi-Z inputs, 6 combo XLR-1/4" TRS balanced mic/line inputs, 10 1/4" TRS balanced/unbalanced line/monitor outputs, and 2 1/4" TRS unbalanced headphone outputs. The Scarlett 18i8 features 2 combo XLR-1/4" TRS balanced/unbalanced mic/line/Hi-Z inputs and 2 combo XLR-1/4" TRS balanced mic/line inputs on the front panel, 4 1/4" TRS balanced line inputs, 4 1/4" TRS balanced line outputs, and 2 1/4" TRS unbalanced headphone outputs on the front panel.
In terms of digital audio I/O, the Scarlett 18i20 is more versatile with 1 RCA coaxial S/PDIF input, 1 RCA coaxial S/PDIF output, and multiple TOSLINK optical ADAT/S/PDIF inputs and outputs. The Scarlett 18i8 includes 1 RCA coaxial S/PDIF input, 1 RCA coaxial S/PDIF output, and a single TOSLINK optical ADAT input.
Both interfaces connect to the host via USB-C and are compatible with macOS (10.12 and later for the 18i8, 10.12 to 11 for the 18i20), Windows 7 or later, and in the case of the 18i8, iPadOS as well. The power requirements differ slightly, with the Scarlett 18i20 needing an AC input, while the Scarlett 18i8 operates with an included AC/DC power adapter.
Overall, while both interfaces share core functionality and high-quality audio specs, the Scarlett 18i20 offers more extensive I/O capabilities and more preamps, making it suitable for larger and more complex recording setups. The Scarlett 18i8, with its more streamlined I/O and additional compatibility with iPadOS, is ideal for smaller studios or mobile recording needs.

General
Channels of I/O
Analog: 8 Inputs / 10 Outputs Digital: 10 Inputs / 10 Outputs	Analog: 8 Input / 6 Output at 192 kHz Digital: 10 Input / 2 Output
Built-In DSP

Maximum Sampling Rate
192 kHz / 24-Bit	192 kHz / 24-Bit
Number of Microphone Inputs
8 Preamps	4 Preamps
Built-In Microphone

Input Level Adjustment
8x Knob	4x Knob
Expansion Slots

When comparing the Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation), several key differences emerge based on their specifications.
The Focusrite Scarlett 18i20 offers a more extensive range of analog and digital I/O channels. Specifically, it provides 8 analog inputs and 10 analog outputs, coupled with 10 digital inputs and 10 digital outputs. In contrast, the Scarlett 18i8 features 8 analog inputs and 6 analog outputs, along with 10 digital inputs and 2 digital outputs. This makes the 18i20 more suitable for users requiring a higher number of output options and digital connectivity.
In terms of microphone inputs, the Scarlett 18i20 is equipped with 8 preamps, doubling the 4 preamps available in the Scarlett 18i8. This makes the 18i20 more ideal for scenarios requiring multiple microphone recordings simultaneously. Both interfaces share a maximum sampling rate of 192 kHz at 24-bit, ensuring high-quality audio across the board.
Both models lack built-in DSP and built-in microphones, maintaining a focus on high-fidelity input and output without onboard processing. The input level adjustment is facilitated through knobs on both devices, with the 18i20 featuring 8 knobs corresponding to its 8 preamps, and the 18i8 including 4 knobs for its 4 preamps. Neither model includes expansion slots, keeping their designs streamlined and straightforward.
Overall, the Scarlett 18i20 is more equipped for extensive recording setups with its higher number of inputs, outputs, and preamps, while the Scarlett 18i8 offers a more compact solution with fewer inputs and outputs, suitable for smaller recording environments.

Signal Processing
Pad
-10 dB (Switchable per Channel)	Mic/Line/Hi-Z: -10 dB (Switchable per Channel)
Gain/Trim Range
Mic/Line Inputs: 56 dB	Mic/Line/Hi-Z Inputs: Up to +56 dB
High-Pass Filter

Solo/Mute
Mute per Master

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) share some similarities and have a few key differences in their features.
In terms of pad, both the Focusrite Scarlett 18i20 and 18i8 offer a -10 dB pad that is switchable per channel. However, the 18i8 explicitly mentions the pad being applicable to Mic/Line/Hi-Z inputs, while the 18i20 mentions it for Mic/Line inputs.
When considering the gain/trim range, both interfaces provide a range of up to 56 dB. The 18i8 specifies this range for Mic/Line/Hi-Z inputs, while the 18i20 indicates it for Mic/Line inputs, aligning with the pad specifications.
Neither the Focusrite Scarlett 18i20 nor the 18i8 includes a high-pass filter, which could be a consideration for users looking for built-in filtering options.
Regarding solo/mute functionality, the 18i20 offers a mute per master option, giving users the ability to mute the master output. On the other hand, the 18i8 does not provide solo or mute options.
Overall, while both interfaces offer a -10 dB pad and a gain/trim range of up to 56 dB, the 18i20 includes a mute per master feature, which is not present in the 18i8. Neither interface includes a high-pass filter. These differences might influence the choice depending on specific needs regarding muting and input types.

Connectivity
Analog Audio I/O
2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 6x Combo XLR-1/4" TRS Balanced Mic/Line Input 10x 1/4" TRS Balanced/Unbalanced Line/Monitor Output 2x 1/4" TRS Unbalanced Headphone Output	2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input (Front Panel) 2x Combo XLR-1/4" TRS Balanced Mic/Line Input (Front Panel) 4x 1/4" TRS Balanced Line Input 4x 1/4" TRS Balanced Line Output 2x 1/4" TRS Unbalanced Headphone Output (Front Panel)
Phantom Power
48 V, Selectable On/Off (on 8 Channels)	48 V, Selectable On/Off (on 4 Channels)
Digital Audio I/O
1x RCA Coaxial S/PDIF Input 1x RCA Coaxial S/PDIF Output 1x TOSLINK Optical ADAT / S/PDIF Input (S/MUX Support) 1x TOSLINK Optical ADAT Input (S/MUX Support) 1x TOSLINK Optical ADAT / S/PDIF Output (S/MUX Support) 1x TOSLINK Optical ADAT Output (S/MUX Support)	1x RCA Coaxial S/PDIF Input 1x RCA Coaxial S/PDIF Output 1x TOSLINK Optical ADAT Input
Host Connection
1x USB-C	1x USB-C
Host Connection Protocol
USB 2.0	USB 2.0
USB (Non-Host)

Sync I/O
1x BNC Word Clock Output
Network I/O

MIDI I/O
1x DIN 5-Pin Input 1x DIN 5-Pin Output	1x DIN 5-Pin Input 1x DIN 5-Pin Output

The Focusrite Scarlett 18i20 and Focusrite Scarlett 18i8, both from the 3rd Generation series and equipped with USB-C connectivity, are robust audio/MIDI interfaces designed for different recording needs. Here is a comparison of their key features:
Analog Audio I/O: The Scarlett 18i20 offers a more extensive range of analog audio inputs and outputs compared to the 18i8. Specifically, the 18i20 includes 2 combo XLR-1/4" TRS balanced/unbalanced mic/line/Hi-Z inputs and 6 combo XLR-1/4" TRS balanced mic/line inputs. In contrast, the 18i8 features 2 combo XLR-1/4" TRS balanced/unbalanced mic/line/Hi-Z inputs and 2 combo XLR-1/4" TRS balanced mic/line inputs. Additionally, the 18i20 provides 10x 1/4" TRS balanced/unbalanced line/monitor outputs, while the 18i8 includes 4x 1/4" TRS balanced line outputs. Both interfaces offer 2x 1/4" TRS unbalanced headphone outputs.
Phantom Power: Phantom power capabilities differ between the two interfaces. The Scarlett 18i20 supports 48 V phantom power selectable on 8 channels, making it highly versatile for professional studio environments with multiple condenser microphones. The Scarlett 18i8, on the other hand, provides 48 V phantom power on 4 channels, which is sufficient for smaller setups.
Digital Audio I/O: The digital audio I/O options are more comprehensive on the Scarlett 18i20. It includes 1x RCA coaxial S/PDIF input, 1x RCA coaxial S/PDIF output, and multiple TOSLINK optical ADAT/S/PDIF inputs and outputs with S/MUX support. Specifically, it has 1x TOSLINK optical ADAT/S/PDIF input, 1x TOSLINK optical ADAT input, 1x TOSLINK optical ADAT/S/PDIF output, and 1x TOSLINK optical ADAT output. The Scarlett 18i8 is more limited with 1x RCA coaxial S/PDIF input, 1x RCA coaxial S/PDIF output, and a single TOSLINK optical ADAT input.
Host Connection and Protocol: Both interfaces use a USB-C host connection with USB 2.0 protocol, ensuring modern connectivity and compatibility with most contemporary computer systems.
Sync I/O: The Scarlett 18i20 is equipped with a BNC word clock output, which is crucial for maintaining synchronization in professional multi-device setups. The Scarlett 18i8 lacks this feature, making it less suitable for complex studio configurations that require precise timing across multiple devices.
MIDI I/O: Both the Scarlett 18i20 and 18i8 feature MIDI I/O capabilities with 1x DIN 5-pin input and 1x DIN 5-pin output, allowing for integration with MIDI controllers and other MIDI-compatible gear.
In summary, the Focusrite Scarlett 18i20 is a more feature-rich interface with greater input/output options, enhanced digital audio I/O capabilities, and additional sync features, making it ideal for larger, more complex recording setups. The Scarlett 18i8, while still capable, is better suited for smaller studios or personal home recording environments with fewer input/output needs and simpler digital audio requirements.

Performance
Frequency Response
20 Hz to 20 kHz ±0.1 dB	20 Hz to 20 kHz ±0.1 dB
Maximum Input Level
Mic Inputs: +9 dBu (Min Gain) +16 dBu (Min Gain, with Pad) Hi-Z Inputs: +12.5 dBu (Min Gain) +14 dBu (Min Gain, with Pad) Line Inputs: +22 dBu (Min Gain) +29 dBu (Min Gain, with Pad)	Mic Inputs: +9 dBu (Min Gain) Hi-Z Inputs: +12.5 dBu (Min Gain) Line Inputs: +22 dBu (Min Gain)
Maximum Output Level
Line Outputs: +15.5 dBu (Balanced) Headphone Outputs: +7 dBu	Line Outputs: +15.5 dBu at 0 dBFS (Balanced) Headphone Outputs: +7 dBu
Impedance
Mic Inputs: 3 Kilohms Hi-Z Inputs: 1.5 Megohms Line Inputs: 60 Kilohms Line Outputs: 430 Ohms Headphone Outputs: < 1 Ohm	Mic Inputs: 3 Kilohms Hi-Z Inputs: 1.5 Megohms Line Inputs: 60 Kilohms Line Outputs: 430 Ohms Headphone Outputs: < 1 Ohm
Dynamic Range
Mic Inputs: 111 dBA Hi-Z Inputs: 110 dBA Line Inputs: 110.5 dBA Line Outputs: 108.5 dBA Headphone Outputs: 104 dBA	Mic Inputs: 111 dBA Hi-Z Inputs: 110 dBA Line Inputs: 110.5 dBA Line Outputs: 108 dBA Headphone Outputs: 104 dBA
THD+N
Mic Inputs: < 0.0012% Hi-Z Inputs: < 0.03% Line Inputs: < 0.002% Line Outputs: < 0.002% Headphone Outputs: < 0.002%	Mic Inputs: < 0.0012% Hi-Z Inputs: < 0.03% Line Inputs: < 0.002% Line Outputs: < 0.002% Headphone Outputs: < 0.002%
EIN
Mic Inputs: -128 dB A-Weighted	Mic Inputs: -128 dB A-Weighted

The Focusrite Scarlett 18i20 and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interfaces (3rd Generation) share several common features but also exhibit notable differences in their specifications. Both models offer a frequency response of 20 Hz to 20 kHz ±0.1 dB, ensuring high-fidelity audio performance across the audible spectrum.
In terms of maximum input levels, the Scarlett 18i20 provides higher maximum input levels with the inclusion of a pad option. Specifically, its mic inputs can handle up to +16 dBu with the pad engaged, compared to the 18i8’s +9 dBu. Similarly, the 18i20’s Hi-Z inputs can manage up to +14 dBu with the pad, whereas the 18i8 supports +12.5 dBu. Both models have line inputs capable of +22 dBu, but the 18i20 can extend this to +29 dBu with the pad.
For maximum output levels, both interfaces offer line outputs of +15.5 dBu (balanced) and headphone outputs of +7 dBu. This consistency indicates that both units can deliver robust output signals suitable for professional audio environments.
The impedance values for mic inputs, Hi-Z inputs, line inputs, line outputs, and headphone outputs are identical across both models. Mic inputs are rated at 3 Kilohms, Hi-Z inputs at 1.5 Megohms, line inputs at 60 Kilohms, line outputs at 430 Ohms, and headphone outputs at less than 1 Ohm.
Dynamic range metrics are also similar between the two units, with mic inputs at 111 dBA, Hi-Z inputs at 110 dBA, and line inputs at 110.5 dBA. The line outputs show a slight difference, with the 18i20 rated at 108.5 dBA and the 18i8 at 108 dBA. Headphone outputs for both models have a dynamic range of 104 dBA.
Total Harmonic Distortion plus Noise (THD+N) values are consistent between both interfaces: mic inputs are less than 0.0012%, Hi-Z inputs less than 0.03%, line inputs less than 0.002%, line outputs less than 0.002%, and headphone outputs less than 0.002%.
Lastly, the Equivalent Input Noise (EIN) for mic inputs is the same for both models, rated at -128 dB A-Weighted, indicating superb low-noise performance for recording applications.
In summary, while the Focusrite Scarlett 18i20 and 18i8 share many core features and performance metrics, the 18i20 offers enhanced maximum input levels with pad options and a slightly higher dynamic range on line outputs. These differences make the 18i20 more versatile and capable of handling higher input levels, which can be crucial in specific professional recording scenarios.

Digital Audio
Sample Rates
Up to 192 kHz (AD/DA Conversion)	Up to 192 kHz (AD/DA Conversion)
Sample Rate Conversion

Bit Depths
Up to 24-Bit (AD/DA Conversion)	Up to 24-Bit (AD/DA Conversion)
Sync Sources
ADAT, Internal, S/PDIF	ADAT, Internal, S/PDIF

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) are both high-quality audio interfaces designed for professional studio use. When comparing these two models based on their key features, we observe several similarities and distinctions that cater to different user needs.
Both the Scarlett 18i20 and Scarlett 18i8 support sample rates of up to 192 kHz for AD/DA conversion, ensuring high-fidelity audio capture and playback. This high sample rate capability makes them suitable for professional recording environments where audio detail and clarity are paramount. Additionally, both interfaces offer up to 24-bit depth for AD/DA conversion, providing a wide dynamic range and precise audio reproduction, which is essential for capturing subtle nuances in recordings.
Neither the Scarlett 18i20 nor the Scarlett 18i8 features sample rate conversion, which means that users need to manage sample rates within their digital audio workstation or other software to match the project requirements. This is a common trait in many audio interfaces within this range and not necessarily a drawback, but rather something users need to be aware of during setup and operation.
In terms of sync sources, both interfaces provide ADAT, Internal, and S/PDIF synchronization options. This allows for versatile connectivity and integration with other digital audio equipment, ensuring that the interfaces can be easily incorporated into larger studio setups. The inclusion of ADAT sync is particularly beneficial for expanding the number of available audio channels via additional preamps or digital converters.
In summary, both the Focusrite Scarlett 18i20 and Scarlett 18i8 (3rd Generation) USB-C Audio/MIDI Interfaces are equipped with identical specifications in terms of sample rates, bit depths, and sync sources. This makes them both capable of delivering high-quality audio performance suitable for professional recording and production environments. The primary differences between the two models would likely lie in their physical connectivity options, number of inputs and outputs, and other hardware features, which are not covered in the specifications provided.

Audio Storage & Playback
Memory Card Slot

When comparing the Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) with the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation), one notable commonality is that neither interface includes a memory card slot. This absence is consistent across both models, indicating that they are designed with a focus on direct computer interfacing and internal storage solutions rather than external memory card usage.
Both the Scarlett 18i20 and the Scarlett 18i8 are part of Focusrite's third generation of audio interfaces, featuring USB-C connectivity for improved data transfer speeds and reduced latency. Despite their differences in input and output configurations, they share similar core functionalities tailored for professional audio recording and MIDI interfacing.
Given that both models lack a memory card slot, users would need to rely on alternative methods for data storage and transfer, such as utilizing their computer's internal storage or external hard drives. This design choice aligns with the professional studio environment where these interfaces are typically used, where fast and reliable direct-to-computer recording is paramount.

Compatibility
OS Compatibility
macOS 10.12 macOS 10.13 macOS 10.14 macOS 10.15 macOS 11 Windows 7 or Later	macOS 10.12 or Later Windows 7 or Later iPadOS
Mobile App Compatible
Yes: iPadOS Only	Yes
Mobile Device Compatibility

Required Hardware
Available USB 2.0 Port USB Cable (Included)	Available USB 2.0 Port USB Cable (Included)
Internet Connection
Required for Software/Driver Download	Required for Software/Driver Download

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) share several similarities but also exhibit key differences in their specifications, particularly concerning OS compatibility and mobile app compatibility.
For OS compatibility, the Focusrite Scarlett 18i20 supports macOS versions 10.12 through 11 and Windows 7 or later. The Scarlett 18i8 also supports macOS starting from version 10.12 but does not limit to a specific upper macOS version, potentially offering broader compatibility with newer macOS updates beyond 11. Both interfaces are compatible with Windows 7 or later, ensuring wide usability across different Windows operating systems.
Regarding mobile app compatibility, both interfaces are compatible with iPadOS. However, the Scarlett 18i20 explicitly mentions compatibility only with iPadOS, while the Scarlett 18i8 broadly states compatibility with iPadOS without exclusions. Neither interface offers general mobile device compatibility beyond iPadOS.
Both interfaces require an available USB 2.0 port and include a USB cable necessary for connections. Additionally, an internet connection is required to download the necessary software and drivers for both devices, ensuring they operate correctly with the respective operating systems.
In summary, while both the Scarlett 18i20 and Scarlett 18i8 offer robust functionality and broad OS compatibility, the 18i8 appears to have a slight edge in terms of potentially broader macOS compatibility. Both units are otherwise very similar regarding mobile app compatibility and hardware requirements, making them versatile choices for professional audio and MIDI interfacing needs.

Power
Power Requirements
AC Input	AC/DC Power Adapter (Included)

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) both offer high-quality audio recording capabilities, but they differ significantly in their power requirements and consumption.
The Focusrite Scarlett 18i20 is designed to be powered through an AC input, requiring an AC input power of 100 to 240 VAC at 50 / 60 Hz. This interface consumes 30 watts of power. Its reliance on a direct AC connection makes it suitable for studio environments where a stable and consistent power source is readily available.
On the other hand, the Focusrite Scarlett 18i8 uses an included AC/DC power adapter for its power requirements. The adapter provides 12 VDC at 1 A, center-positive, ensuring the device receives the necessary power for operation. This method of power delivery offers more flexibility in terms of potential power sources, as it can be used in environments where an AC outlet may not be readily accessible, provided that the adapter is compatible.
In summary, the Focusrite Scarlett 18i20 requires a direct AC power source with a specific input range and consumes more power, making it ideal for fixed studio setups. The Focusrite Scarlett 18i8, with its AC/DC power adapter, offers more flexibility and can be utilized in various settings, including mobile recording scenarios.

Physical
Dimensions
19 x 10.23 x 1.83" / 48.3 x 25.98 x 4.65 cm	9.49 x 6.28 x 2.4" / 24.1 x 15.95 x 6.1 cm

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) are both high-quality audio interfaces, but they differ in a few key areas.
Starting with the physical dimensions and form factor, the Scarlett 18i20 is designed as a rackmount unit with a size of 1 RU, making it suitable for professional studio rack setups. It measures 19 x 10.23 x 1.83 inches (48.3 x 25.98 x 4.65 cm) and weighs 7.2 pounds (3.3 kg). This makes the 18i20 a larger and heavier unit, tailored for fixed installations in a studio environment.
On the other hand, the Scarlett 18i8 is more compact and portable, with dimensions of 9.49 x 6.28 x 2.4 inches (24.1 x 15.95 x 6.1 cm). This smaller footprint makes it a more suitable choice for mobile recording setups or smaller studio spaces where rackmounting is not required. Additionally, the 18i8 includes an anti-theft feature in the form of a Kensington Security Slot, providing an extra layer of security for users who might need to secure their interface in various environments.
In summary, the Scarlett 18i20 is a robust, rackmountable interface ideal for professional studio installations, whereas the Scarlett 18i8 offers a more portable solution with the added security of a Kensington Security Slot, making it versatile for different recording scenarios.

Packaging Info
Package Weight
9.8 lb	4.7 lb
Box Dimensions (LxWxH)
23.7 x 12.8 x 3.5"	12.6 x 10.5 x 3.4"

The Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) and the Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) showcase distinct differences in terms of package weight and box dimensions.
The Focusrite Scarlett 18i20 has a package weight of 9.8 lb, making it significantly heavier compared to the Focusrite Scarlett 18i8, which weighs 4.7 lb. This difference in weight can be attributed to the additional features and expanded connectivity options present in the 18i20 model, which generally caters to more extensive studio setups.
In terms of box dimensions, the Focusrite Scarlett 18i20 measures 23.7 x 12.8 x 3.5 inches (LxWxH). This larger size reflects its more robust build and the inclusion of more input/output options. On the other hand, the Focusrite Scarlett 18i8 comes in a more compact package with dimensions of 12.6 x 10.5 x 3.4 inches (LxWxH). The smaller dimensions of the 18i8 make it a more portable option, ideal for users who require a balance between functionality and mobility.
In summary, the Focusrite Scarlett 18i20 is heavier and larger, suggesting a more feature-rich unit suitable for larger studio environments. Conversely, the Focusrite Scarlett 18i8 is lighter and more compact, making it a preferable choice for those needing a versatile yet portable audio/MIDI interface.