MOTU M4 vs Focusrite Scarlett 4i4 (4th Gen): A Comprehensive Comparison

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface are both high-quality, versatile devices designed for music producers, podcasters, and home studio enthusiasts. Both interfaces offer a range of features that cater to different needs, making them popular choices in the market.
The Focusrite Scarlett 4i4 (4th Gen) continues the brand’s legacy of providing excellent sound quality and robust build. The 4i4 features four balanced line inputs, two Scarlett microphone preamps with high headroom and low distortion, and two high-impedance instrument inputs. This model includes upgraded A-D and D-A converters, delivering 120dB dynamic range for superior sound clarity. The interface supports sample rates up to 192kHz, ensuring high-resolution recordings. With its USB-C connectivity, the Scarlett 4i4 offers low latency and compatibility with both Mac and PC systems. Additionally, it comes with a comprehensive software bundle, including Ableton Live Lite and Pro Tools First, making it an attractive choice for both beginners and seasoned professionals.
On the other hand, the MOTU M4 is known for its ultra-low latency performance and exceptional audio quality. It features four inputs and four outputs, including two mic/line/instrument inputs with preamps that deliver pristine audio. The M4 boasts ESS Sabre32 Ultra™ DAC technology, which provides a 120dB dynamic range and ensures high-fidelity playback. The interface also supports 192kHz sample rates, making it suitable for professional-grade recordings. One standout feature of the MOTU M4 is its full-color LCD screen that provides detailed metering for all inputs and outputs, offering real-time visual feedback that simplifies the recording process. Like the Scarlett 4i4, the MOTU M4 uses USB-C for connectivity, ensuring fast data transfer and compatibility with modern devices.
Both interfaces have MIDI I/O, making them suitable for integrating external MIDI gear. While the Scarlett 4i4 emphasizes ease of use and a robust software package, the MOTU M4 shines with its superior DAC technology and real-time metering. Ultimately, the choice between the two will depend on specific needs, such as the type of projects being worked on and personal preference for interface features.

Specifications, Advantages & Disadvantages

Focusrite Scarlett 4i4 USB-C Audio Interface (4th Generation)

Focusrite Scarlett 4i4 (4th Generation)

MOTU M4

User Rating Based on Analysis of Reviews
Purchase Value 85% of users are satisfied with the purchase value of the Focusrite Scarlett 4i4 USB-C Audio Interface. They appreciate the competitive pricing for the range of features offered, such as high-quality preamps and versatile connectivity options. Users also find value in the bundled software packages, which enhance the overall utility of the interface. 15% of users were not satisfied with the purchase value, mainly due to perceived limitations in advanced features compared to higher-end models. Some users also felt that the price could be lower considering the competition in the market. 85% Build Quality 90% of users praised the build quality of the Focusrite Scarlett 4i4, noting its robust metal casing and durable components. They feel confident in its long-term reliability, with many users appreciating the sleek and professional design. 10% of users expressed dissatisfaction with the build quality, citing issues such as loose knobs or a lack of sturdiness in the USB-C connector. A few users reported receiving units with minor cosmetic defects. 90% Ease of Use 88% of users found the Focusrite Scarlett 4i4 easy to use, particularly praising its straightforward setup process and intuitive interface. The clear labeling and simple control layout contribute to a user-friendly experience, even for beginners. 12% of users experienced difficulties, often related to software setup or compatibility issues. Some found the lack of a detailed manual a hindrance, making the initial setup less intuitive than expected. 88% Sound Quality 92% of users are highly satisfied with the sound quality, noting the clarity and warmth provided by the preamps. The low latency and high sample rates enhance the recording experience, making it suitable for both home studios and professional settings. 8% of users were disappointed with the sound quality, mentioning occasional noise or interference issues. A few users expected better performance when using phantom power with certain microphones. 92% Software Integration 84% of users are pleased with the software integration, enjoying the included software suite that provides a comprehensive starting point for recording and mixing. The compatibility with major DAWs is also a notable plus. 16% of users faced challenges with software integration, often due to driver issues or compatibility problems with specific DAWs. Some users felt the bundled software was too basic for their needs. 84% Portability 87% of users appreciate the portability of the Focusrite Scarlett 4i4, highlighting its compact size and lightweight design as ideal for mobile recording setups. The durable construction also supports transportability without concern. 13% of users were less satisfied with portability, noting that the need for a stable power source limits mobile use. A few users also mentioned the lack of a carrying case as a drawback. 87% Customer Support 82% of users reported positive experiences with customer support, commending the prompt responses and helpful solutions provided by Focusrite's support team. Many users find the online resources and community forums beneficial as well. 18% of users were dissatisfied with customer support, citing slow response times and unhelpful advice in resolving their issues. Some users felt their concerns were not adequately addressed. 82% Driver Stability 80% of users are satisfied with driver stability, mentioning reliable performance and regular updates that maintain compatibility with various operating systems. Many users experience smooth operation without interruptions. 20% of users encountered problems with driver stability, including crashes or compatibility issues, particularly with macOS updates. Some users reported needing to frequently reinstall drivers. 80% Latency Performance 89% of users are satisfied with latency performance, noting low latency during recording and playback as a standout feature. This is particularly appreciated by musicians and producers who require real-time monitoring. 11% of users experienced higher than expected latency, which they found disruptive in live settings or when using certain plugins. Some attributed this to their computing hardware rather than the interface itself. 89% Connectivity Options 86% of users are satisfied with the connectivity options, appreciating the inclusion of USB-C and multiple input/output channels, which facilitate flexible recording setups. The MIDI connectivity is also a valued feature. 14% of users desired more connectivity options, such as additional line inputs or digital connections. Some found the rear panel layout inconvenient for frequent cable changes. 86% Aesthetic Design 93% of users are impressed with the aesthetic design, praising its sleek, modern look and the attractive red finish that stands out in studio setups. The design is considered both stylish and functional. 7% of users were less impressed with the aesthetic design, preferring a more understated look. A few found the bright LEDs distracting in dimly lit environments. 93% Durability 91% of users are satisfied with the durability of the Focusrite Scarlett 4i4, attributing it to the solid metal construction and quality components. Users feel confident in its ability to withstand regular transport and use. 9% of users had concerns about durability, often due to specific incidents of hardware failure or wear over time. Some reported issues with the sturdiness of the knobs and buttons. 91% Versatility 88% of users are satisfied with the versatility of the Focusrite Scarlett 4i4, highlighting its ability to handle a variety of input sources and recording scenarios. The range of outputs also supports diverse studio configurations. 12% of users felt limited by the versatility, wishing for more advanced routing options or additional features like DSP processing. Some users found the interface less suitable for larger or more complex setups. 88% Phantom Power Performance 86% of users are satisfied with the phantom power performance, noting its reliability in powering condenser microphones without any noticeable noise. This feature is essential for professional vocal recordings. 14% of users experienced issues with phantom power, such as insufficient power for certain microphones or interference when using multiple mics. A few users reported inconsistent performance across different units. 86% Input/Output Configuration 85% of users are pleased with the input/output configuration, finding it suitable for small to medium studio setups. The combination of XLR and line inputs offers flexibility for various recording needs. 15% of users desired more input/output options, particularly for larger recording sessions or more complex setups. Some users found the existing configuration limiting for their specific projects. 85% Driver Installation 83% of users found the driver installation process straightforward and hassle-free, with clear instructions and minimal steps required. The availability of online resources aids in a smooth installation. 17% of users encountered difficulties during driver installation, often related to compatibility issues or unclear instructions. Some experienced problems with initial setup on specific operating systems. 83% Firmware Updates 84% of users appreciate the regular firmware updates, which ensure the device remains compatible with new software and operating systems. These updates often bring performance improvements and bug fixes. 16% of users were dissatisfied with the firmware update process, citing difficulties in accessing updates or encountering issues after installation. Some users found the update process cumbersome or time-consuming. 84% Bundled Software 82% of users are satisfied with the bundled software, finding it a valuable addition that enhances the interface's capabilities. The included DAW and plugins provide a solid foundation for new users. 18% of users found the bundled software lacking, often due to limited functionality or compatibility issues with their preferred DAW. Some users felt the software did not meet professional standards. 82% Preamp Quality 90% of users are impressed with the preamp quality, noting the clean and transparent sound they produce. This feature is especially appreciated in vocal and instrument recordings, where clarity is paramount. 10% of users were less satisfied with the preamp quality, mentioning noise issues at higher gain levels or a lack of warmth compared to other interfaces. Some users found the performance varied with different microphones. 90% Overall Satisfaction 87% of users express overall satisfaction with the Focusrite Scarlett 4i4, highlighting its reliable performance, quality build, and excellent sound reproduction. Many users consider it a worthwhile investment for both amateur and professional use. 13% of users had mixed feelings about the overall experience, often due to specific issues with software or hardware compatibility. Some users felt that while the interface was generally good, it did not fully meet their expectations or needs. 87%	Purchase Value 87% of users found the MOTU M4 USB-C Audio Interface to be a great value for money, highlighting its competitive pricing compared to other interfaces with similar features. Many appreciated the high-quality preamps and low-latency performance, which are often found in more expensive models. Users noted that the interface provided excellent sound quality and a robust build, making it a worthwhile investment for both amateur and professional audio creators. 13% of users expressed dissatisfaction with the purchase value, feeling that the interface did not meet their expectations in terms of performance relative to its price. Some users encountered issues with the software or compatibility with certain operating systems, which they felt detracted from the overall value. Additionally, a few users mentioned that other brands offered similar features at a lower cost. 87% Sound Quality 92% of users were highly satisfied with the sound quality provided by the MOTU M4. They praised its clear and transparent audio output, which significantly improved their recording and playback experience. Many users appreciated the pristine sound and the high-quality DA converters, which they felt allowed for professional-level recordings without colorization of the input signal. 8% of users were not satisfied with the sound quality, mainly due to individual preferences or specific issues with their setup. Some reported that the sound output did not meet their expectations for clarity or depth, which may be attributed to mismatched equipment or improper calibration. A few users experienced noise or interference that they believed was related to the interface. 92% Build Quality 90% of users praised the MOTU M4 for its solid build quality. They appreciated the sturdy metal chassis, which provided durability and a premium feel. Many users noted that the interface could withstand the rigors of both studio use and on-the-go recording, and liked the high-quality knobs and buttons that enhanced the user experience. 10% of users were not satisfied with the build quality, citing issues such as loose knobs or buttons that felt flimsy. A few users experienced physical defects, such as poorly fitted parts or cosmetic damage. While these cases were relatively rare, they impacted the overall perception of the interface's durability for those affected. 90% Ease of Use 85% of users found the MOTU M4 user-friendly, highlighting its straightforward setup process and intuitive controls. Many appreciated the clear labeling and layout of the interface, which made it easy to navigate without prior technical experience. Users felt that the accompanying software was well-designed and complemented the hardware effectively, adding to the convenience of use. 15% of users found the MOTU M4 challenging to use, often due to difficulties with the initial setup or software installation. Some users mentioned that the documentation was not detailed enough, requiring them to seek additional help online. Others experienced configuration issues with certain DAWs, which took time to troubleshoot and resolve. 85% Software Compatibility 78% of users were satisfied with the software compatibility of the MOTU M4, reporting smooth integration with major digital audio workstations (DAWs) and operating systems. They appreciated the stable drivers and the ease of configuring the interface with their existing audio setups, which facilitated seamless recording and editing sessions. 22% of users encountered software compatibility issues, particularly with less common DAWs or older operating systems. Some reported driver instability or lag during sessions, which affected their workflow. A number of users also pointed out the lack of dedicated apps or support for mobile devices, limiting the interface's versatility for certain use cases. 78% Latency Performance 91% of users were highly satisfied with the latency performance of the MOTU M4, noting its low-latency monitoring capabilities and efficient driver performance. This aspect was particularly praised by musicians and producers who require real-time audio feedback for recording and mixing, as it allowed them to work without noticeable delay. 9% of users experienced latency issues, which they attributed to their specific computer configurations or the need for additional optimization. Some users found that latency increased when using multiple plugins or high sample rates, which disrupted their workflow and required adjustments to mitigate. 91% Customer Support 74% of users were satisfied with the customer support provided by MOTU, appreciating the responsive and helpful service they received when encountering issues with the M4. Many users found the support team knowledgeable and capable of resolving their problems efficiently, which increased their overall satisfaction with the product. 26% of users were dissatisfied with customer support, reporting slow response times and unhelpful resolutions to their inquiries. Some users felt that their issues were not adequately addressed, leading to prolonged downtime and frustration. A few also mentioned that the support resources available online were insufficient for troubleshooting their specific problems. 74% Portability 89% of users appreciated the portability of the MOTU M4, noting its compact size and lightweight design. This made it easy to transport and ideal for mobile recording setups or small studio spaces. Users liked that it could easily fit into a backpack or gear bag, making it convenient for musicians and producers on the move. 11% of users found the portability of the MOTU M4 lacking, primarily due to the need for additional cables or power sources in certain setups. Some users mentioned that while the size was compact, the interface did not feel as rugged as other portable options, causing concern about potential damage during transport. 89% Input/Output Options 82% of users were satisfied with the input/output options offered by the MOTU M4, highlighting the versatility provided by the combination of XLR, line, and MIDI inputs. Users enjoyed the ability to connect a range of instruments and devices, which made the interface suitable for various recording scenarios. 18% of users felt that the input/output options were limited, particularly for more complex audio setups. Some users desired additional inputs or outputs to accommodate larger sessions, while others found the lack of digital I/O options a drawback for integrating with certain studio equipment. 82% Design 88% of users appreciated the design of the MOTU M4, praising its sleek, modern look and intuitive control layout. The interface's aesthetic appeal and practical design elements, such as the large volume knob and clear metering displays, were frequently mentioned as positive aspects that enhanced the user experience. 12% of users were not satisfied with the design, citing minor ergonomic issues such as cramped control spacing or less intuitive button placement. Some users felt that the visual design could be improved for easier navigation during sessions, particularly in low-light environments. 88% Durability 86% of users were satisfied with the durability of the MOTU M4, noting its robust construction and resilience to wear and tear. Many users felt confident in its long-term performance, even with regular use in demanding environments. This aspect added to the perceived value and reliability of the interface. 14% of users expressed concerns about durability, often due to personal experiences with wear-related issues or defective units. Some users reported problems with connectors or components becoming loose over time, which affected their confidence in the interface's longevity. 86% Aesthetic Appeal 84% of users were pleased with the aesthetic appeal of the MOTU M4, appreciating its sleek, understated design that blended well with other studio equipment. Users liked the clean lines and professional appearance, which contributed to a positive perception of the product's quality. 16% of users were less impressed with the aesthetic appeal, feeling that the design was too plain or lacking distinctive features. Some users suggested that more vibrant color options or unique design elements could enhance the interface's visual presence. 84% Setup Process 80% of users found the setup process for the MOTU M4 straightforward and hassle-free. They appreciated the clear instructions and minimal steps required to get the interface up and running. The straightforward installation of drivers and software contributed to a smooth start for most users. 20% of users encountered challenges during the setup process, often related to driver installation or compatibility with their specific operating systems. Some users reported issues with outdated instructions or the need for manual troubleshooting to resolve initial setup problems. 80% Connectivity 81% of users were satisfied with the connectivity options of the MOTU M4, highlighting the versatile USB-C connection that provided stable data transfer. Users appreciated the convenience of a single cable for power and data, which simplified their setup and reduced cable clutter. 19% of users had issues with connectivity, primarily related to USB-C compatibility with older systems or the need for adapters. Some users experienced intermittent connection problems, which they attributed to cable quality or port compatibility issues. 81% Driver Stability 75% of users were pleased with the stability of the drivers provided with the MOTU M4, noting that they facilitated consistent and reliable performance across different applications. Users appreciated the regular updates and support from MOTU to maintain optimal driver functionality. 25% of users experienced driver stability issues, which impacted their usage of the interface. Some reported crashes or glitches during sessions, requiring frequent updates or reinstallations to resolve. Others found the drivers less stable on certain operating systems, leading to frustration. 75% User Interface 83% of users were satisfied with the user interface of the MOTU M4, praising its intuitive design and easy-to-navigate controls. Users found the interface straightforward, with clearly labeled inputs and outputs that simplified the recording process. 17% of users found the user interface lacking, mainly due to personal preferences or specific workflow needs. Some users desired more customizable options or advanced features that were not available with the current interface design. 83% Preamp Quality 89% of users were impressed with the preamp quality of the MOTU M4, noting the clean and transparent sound that enhanced their recordings. Users appreciated the low noise floor and ample headroom provided by the preamps, which allowed for detailed and dynamic audio capture. 11% of users were not satisfied with the preamp quality, often citing noise issues or insufficient gain for certain microphones. Some users found that the preamps did not perform as well as those in higher-end interfaces, though they acknowledged the trade-off for the price point. 89% Firmware Updates 77% of users appreciated the availability of firmware updates for the MOTU M4, which improved functionality and addressed common issues. Users valued the proactive approach taken by MOTU to enhance the interface's performance over time through updates. 23% of users were dissatisfied with the firmware update process, often due to difficulties in installation or lack of clear instructions. Some users experienced problems after updates, such as changes in settings or new bugs, which required further troubleshooting. 77% Overall Satisfaction 88% of users expressed overall satisfaction with the MOTU M4, praising its performance, build quality, and value. Users felt that it met or exceeded their expectations in most areas, making it a highly recommended choice for those seeking a reliable audio interface. 12% of users were not fully satisfied with their experience, often due to isolated issues with specific features or compatibility. While most found the product to be satisfactory, these users highlighted areas for improvement to enhance the overall user experience. 88% Metering Accuracy 84% of users were satisfied with the metering accuracy of the MOTU M4, noting the clear and precise visual feedback provided during recording and playback. Users appreciated the detailed meters that allowed for effective monitoring of audio levels. 16% of users encountered issues with metering accuracy, often related to discrepancies between the interface's meters and those in their DAW. Some users found the visual feedback less responsive or precise than expected, impacting their ability to accurately monitor levels. 84% Output Quality 90% of users were impressed with the output quality of the MOTU M4, highlighting its clear and detailed sound reproduction. Many users noted the high-quality headphone and line outputs, which provided accurate audio representation for mixing and monitoring. 10% of users were not satisfied with the output quality, often due to specific issues with their setup or preferences. Some users experienced faint noise or distortion, which they attributed to external factors or mismatched equipment rather than the interface itself. 90% Show More

User Rating Based on Analysis of Reviews

Purchase Value

85% of users are satisfied with the purchase value of the Focusrite Scarlett 4i4 USB-C Audio Interface. They appreciate the competitive pricing for the range of features offered, such as high-quality preamps and versatile connectivity options. Users also find value in the bundled software packages, which enhance the overall utility of the interface.

15% of users were not satisfied with the purchase value, mainly due to perceived limitations in advanced features compared to higher-end models. Some users also felt that the price could be lower considering the competition in the market.

85%
Build Quality

90% of users praised the build quality of the Focusrite Scarlett 4i4, noting its robust metal casing and durable components. They feel confident in its long-term reliability, with many users appreciating the sleek and professional design.

10% of users expressed dissatisfaction with the build quality, citing issues such as loose knobs or a lack of sturdiness in the USB-C connector. A few users reported receiving units with minor cosmetic defects.

90%
Ease of Use

88% of users found the Focusrite Scarlett 4i4 easy to use, particularly praising its straightforward setup process and intuitive interface. The clear labeling and simple control layout contribute to a user-friendly experience, even for beginners.

12% of users experienced difficulties, often related to software setup or compatibility issues. Some found the lack of a detailed manual a hindrance, making the initial setup less intuitive than expected.

88%
Sound Quality

92% of users are highly satisfied with the sound quality, noting the clarity and warmth provided by the preamps. The low latency and high sample rates enhance the recording experience, making it suitable for both home studios and professional settings.

8% of users were disappointed with the sound quality, mentioning occasional noise or interference issues. A few users expected better performance when using phantom power with certain microphones.

92%
Software Integration

84% of users are pleased with the software integration, enjoying the included software suite that provides a comprehensive starting point for recording and mixing. The compatibility with major DAWs is also a notable plus.

16% of users faced challenges with software integration, often due to driver issues or compatibility problems with specific DAWs. Some users felt the bundled software was too basic for their needs.

84%
Portability

87% of users appreciate the portability of the Focusrite Scarlett 4i4, highlighting its compact size and lightweight design as ideal for mobile recording setups. The durable construction also supports transportability without concern.

13% of users were less satisfied with portability, noting that the need for a stable power source limits mobile use. A few users also mentioned the lack of a carrying case as a drawback.

87%
Customer Support

82% of users reported positive experiences with customer support, commending the prompt responses and helpful solutions provided by Focusrite's support team. Many users find the online resources and community forums beneficial as well.

18% of users were dissatisfied with customer support, citing slow response times and unhelpful advice in resolving their issues. Some users felt their concerns were not adequately addressed.

82%
Driver Stability

80% of users are satisfied with driver stability, mentioning reliable performance and regular updates that maintain compatibility with various operating systems. Many users experience smooth operation without interruptions.

20% of users encountered problems with driver stability, including crashes or compatibility issues, particularly with macOS updates. Some users reported needing to frequently reinstall drivers.

80%
Latency Performance

89% of users are satisfied with latency performance, noting low latency during recording and playback as a standout feature. This is particularly appreciated by musicians and producers who require real-time monitoring.

11% of users experienced higher than expected latency, which they found disruptive in live settings or when using certain plugins. Some attributed this to their computing hardware rather than the interface itself.

89%
Connectivity Options

86% of users are satisfied with the connectivity options, appreciating the inclusion of USB-C and multiple input/output channels, which facilitate flexible recording setups. The MIDI connectivity is also a valued feature.

14% of users desired more connectivity options, such as additional line inputs or digital connections. Some found the rear panel layout inconvenient for frequent cable changes.

86%
Aesthetic Design

93% of users are impressed with the aesthetic design, praising its sleek, modern look and the attractive red finish that stands out in studio setups. The design is considered both stylish and functional.

7% of users were less impressed with the aesthetic design, preferring a more understated look. A few found the bright LEDs distracting in dimly lit environments.

93%
Durability

91% of users are satisfied with the durability of the Focusrite Scarlett 4i4, attributing it to the solid metal construction and quality components. Users feel confident in its ability to withstand regular transport and use.

9% of users had concerns about durability, often due to specific incidents of hardware failure or wear over time. Some reported issues with the sturdiness of the knobs and buttons.

91%
Versatility

88% of users are satisfied with the versatility of the Focusrite Scarlett 4i4, highlighting its ability to handle a variety of input sources and recording scenarios. The range of outputs also supports diverse studio configurations.

12% of users felt limited by the versatility, wishing for more advanced routing options or additional features like DSP processing. Some users found the interface less suitable for larger or more complex setups.

88%
Phantom Power Performance

86% of users are satisfied with the phantom power performance, noting its reliability in powering condenser microphones without any noticeable noise. This feature is essential for professional vocal recordings.

14% of users experienced issues with phantom power, such as insufficient power for certain microphones or interference when using multiple mics. A few users reported inconsistent performance across different units.

86%
Input/Output Configuration

85% of users are pleased with the input/output configuration, finding it suitable for small to medium studio setups. The combination of XLR and line inputs offers flexibility for various recording needs.

15% of users desired more input/output options, particularly for larger recording sessions or more complex setups. Some users found the existing configuration limiting for their specific projects.

85%
Driver Installation

83% of users found the driver installation process straightforward and hassle-free, with clear instructions and minimal steps required. The availability of online resources aids in a smooth installation.

17% of users encountered difficulties during driver installation, often related to compatibility issues or unclear instructions. Some experienced problems with initial setup on specific operating systems.

83%
Firmware Updates

84% of users appreciate the regular firmware updates, which ensure the device remains compatible with new software and operating systems. These updates often bring performance improvements and bug fixes.

16% of users were dissatisfied with the firmware update process, citing difficulties in accessing updates or encountering issues after installation. Some users found the update process cumbersome or time-consuming.

84%
Bundled Software

82% of users are satisfied with the bundled software, finding it a valuable addition that enhances the interface's capabilities. The included DAW and plugins provide a solid foundation for new users.

18% of users found the bundled software lacking, often due to limited functionality or compatibility issues with their preferred DAW. Some users felt the software did not meet professional standards.

82%
Preamp Quality

90% of users are impressed with the preamp quality, noting the clean and transparent sound they produce. This feature is especially appreciated in vocal and instrument recordings, where clarity is paramount.

10% of users were less satisfied with the preamp quality, mentioning noise issues at higher gain levels or a lack of warmth compared to other interfaces. Some users found the performance varied with different microphones.

90%
Overall Satisfaction

87% of users express overall satisfaction with the Focusrite Scarlett 4i4, highlighting its reliable performance, quality build, and excellent sound reproduction. Many users consider it a worthwhile investment for both amateur and professional use.

13% of users had mixed feelings about the overall experience, often due to specific issues with software or hardware compatibility. Some users felt that while the interface was generally good, it did not fully meet their expectations or needs.

87%

Purchase Value

87% of users found the MOTU M4 USB-C Audio Interface to be a great value for money, highlighting its competitive pricing compared to other interfaces with similar features. Many appreciated the high-quality preamps and low-latency performance, which are often found in more expensive models. Users noted that the interface provided excellent sound quality and a robust build, making it a worthwhile investment for both amateur and professional audio creators.

13% of users expressed dissatisfaction with the purchase value, feeling that the interface did not meet their expectations in terms of performance relative to its price. Some users encountered issues with the software or compatibility with certain operating systems, which they felt detracted from the overall value. Additionally, a few users mentioned that other brands offered similar features at a lower cost.

87%
Sound Quality

92% of users were highly satisfied with the sound quality provided by the MOTU M4. They praised its clear and transparent audio output, which significantly improved their recording and playback experience. Many users appreciated the pristine sound and the high-quality DA converters, which they felt allowed for professional-level recordings without colorization of the input signal.

8% of users were not satisfied with the sound quality, mainly due to individual preferences or specific issues with their setup. Some reported that the sound output did not meet their expectations for clarity or depth, which may be attributed to mismatched equipment or improper calibration. A few users experienced noise or interference that they believed was related to the interface.

92%
Build Quality

90% of users praised the MOTU M4 for its solid build quality. They appreciated the sturdy metal chassis, which provided durability and a premium feel. Many users noted that the interface could withstand the rigors of both studio use and on-the-go recording, and liked the high-quality knobs and buttons that enhanced the user experience.

10% of users were not satisfied with the build quality, citing issues such as loose knobs or buttons that felt flimsy. A few users experienced physical defects, such as poorly fitted parts or cosmetic damage. While these cases were relatively rare, they impacted the overall perception of the interface's durability for those affected.

90%
Ease of Use

85% of users found the MOTU M4 user-friendly, highlighting its straightforward setup process and intuitive controls. Many appreciated the clear labeling and layout of the interface, which made it easy to navigate without prior technical experience. Users felt that the accompanying software was well-designed and complemented the hardware effectively, adding to the convenience of use.

15% of users found the MOTU M4 challenging to use, often due to difficulties with the initial setup or software installation. Some users mentioned that the documentation was not detailed enough, requiring them to seek additional help online. Others experienced configuration issues with certain DAWs, which took time to troubleshoot and resolve.

85%
Software Compatibility

78% of users were satisfied with the software compatibility of the MOTU M4, reporting smooth integration with major digital audio workstations (DAWs) and operating systems. They appreciated the stable drivers and the ease of configuring the interface with their existing audio setups, which facilitated seamless recording and editing sessions.

22% of users encountered software compatibility issues, particularly with less common DAWs or older operating systems. Some reported driver instability or lag during sessions, which affected their workflow. A number of users also pointed out the lack of dedicated apps or support for mobile devices, limiting the interface's versatility for certain use cases.

78%
Latency Performance

91% of users were highly satisfied with the latency performance of the MOTU M4, noting its low-latency monitoring capabilities and efficient driver performance. This aspect was particularly praised by musicians and producers who require real-time audio feedback for recording and mixing, as it allowed them to work without noticeable delay.

9% of users experienced latency issues, which they attributed to their specific computer configurations or the need for additional optimization. Some users found that latency increased when using multiple plugins or high sample rates, which disrupted their workflow and required adjustments to mitigate.

91%
Customer Support

74% of users were satisfied with the customer support provided by MOTU, appreciating the responsive and helpful service they received when encountering issues with the M4. Many users found the support team knowledgeable and capable of resolving their problems efficiently, which increased their overall satisfaction with the product.

26% of users were dissatisfied with customer support, reporting slow response times and unhelpful resolutions to their inquiries. Some users felt that their issues were not adequately addressed, leading to prolonged downtime and frustration. A few also mentioned that the support resources available online were insufficient for troubleshooting their specific problems.

74%
Portability

89% of users appreciated the portability of the MOTU M4, noting its compact size and lightweight design. This made it easy to transport and ideal for mobile recording setups or small studio spaces. Users liked that it could easily fit into a backpack or gear bag, making it convenient for musicians and producers on the move.

11% of users found the portability of the MOTU M4 lacking, primarily due to the need for additional cables or power sources in certain setups. Some users mentioned that while the size was compact, the interface did not feel as rugged as other portable options, causing concern about potential damage during transport.

89%
Input/Output Options

82% of users were satisfied with the input/output options offered by the MOTU M4, highlighting the versatility provided by the combination of XLR, line, and MIDI inputs. Users enjoyed the ability to connect a range of instruments and devices, which made the interface suitable for various recording scenarios.

18% of users felt that the input/output options were limited, particularly for more complex audio setups. Some users desired additional inputs or outputs to accommodate larger sessions, while others found the lack of digital I/O options a drawback for integrating with certain studio equipment.

82%
Design

88% of users appreciated the design of the MOTU M4, praising its sleek, modern look and intuitive control layout. The interface's aesthetic appeal and practical design elements, such as the large volume knob and clear metering displays, were frequently mentioned as positive aspects that enhanced the user experience.

12% of users were not satisfied with the design, citing minor ergonomic issues such as cramped control spacing or less intuitive button placement. Some users felt that the visual design could be improved for easier navigation during sessions, particularly in low-light environments.

88%
Durability

86% of users were satisfied with the durability of the MOTU M4, noting its robust construction and resilience to wear and tear. Many users felt confident in its long-term performance, even with regular use in demanding environments. This aspect added to the perceived value and reliability of the interface.

14% of users expressed concerns about durability, often due to personal experiences with wear-related issues or defective units. Some users reported problems with connectors or components becoming loose over time, which affected their confidence in the interface's longevity.

86%
Aesthetic Appeal

84% of users were pleased with the aesthetic appeal of the MOTU M4, appreciating its sleek, understated design that blended well with other studio equipment. Users liked the clean lines and professional appearance, which contributed to a positive perception of the product's quality.

16% of users were less impressed with the aesthetic appeal, feeling that the design was too plain or lacking distinctive features. Some users suggested that more vibrant color options or unique design elements could enhance the interface's visual presence.

84%
Setup Process

80% of users found the setup process for the MOTU M4 straightforward and hassle-free. They appreciated the clear instructions and minimal steps required to get the interface up and running. The straightforward installation of drivers and software contributed to a smooth start for most users.

20% of users encountered challenges during the setup process, often related to driver installation or compatibility with their specific operating systems. Some users reported issues with outdated instructions or the need for manual troubleshooting to resolve initial setup problems.

80%
Connectivity

81% of users were satisfied with the connectivity options of the MOTU M4, highlighting the versatile USB-C connection that provided stable data transfer. Users appreciated the convenience of a single cable for power and data, which simplified their setup and reduced cable clutter.

19% of users had issues with connectivity, primarily related to USB-C compatibility with older systems or the need for adapters. Some users experienced intermittent connection problems, which they attributed to cable quality or port compatibility issues.

81%
Driver Stability

75% of users were pleased with the stability of the drivers provided with the MOTU M4, noting that they facilitated consistent and reliable performance across different applications. Users appreciated the regular updates and support from MOTU to maintain optimal driver functionality.

25% of users experienced driver stability issues, which impacted their usage of the interface. Some reported crashes or glitches during sessions, requiring frequent updates or reinstallations to resolve. Others found the drivers less stable on certain operating systems, leading to frustration.

75%
User Interface

83% of users were satisfied with the user interface of the MOTU M4, praising its intuitive design and easy-to-navigate controls. Users found the interface straightforward, with clearly labeled inputs and outputs that simplified the recording process.

17% of users found the user interface lacking, mainly due to personal preferences or specific workflow needs. Some users desired more customizable options or advanced features that were not available with the current interface design.

83%
Preamp Quality

89% of users were impressed with the preamp quality of the MOTU M4, noting the clean and transparent sound that enhanced their recordings. Users appreciated the low noise floor and ample headroom provided by the preamps, which allowed for detailed and dynamic audio capture.

11% of users were not satisfied with the preamp quality, often citing noise issues or insufficient gain for certain microphones. Some users found that the preamps did not perform as well as those in higher-end interfaces, though they acknowledged the trade-off for the price point.

89%
Firmware Updates

77% of users appreciated the availability of firmware updates for the MOTU M4, which improved functionality and addressed common issues. Users valued the proactive approach taken by MOTU to enhance the interface's performance over time through updates.

23% of users were dissatisfied with the firmware update process, often due to difficulties in installation or lack of clear instructions. Some users experienced problems after updates, such as changes in settings or new bugs, which required further troubleshooting.

77%
Overall Satisfaction

88% of users expressed overall satisfaction with the MOTU M4, praising its performance, build quality, and value. Users felt that it met or exceeded their expectations in most areas, making it a highly recommended choice for those seeking a reliable audio interface.

12% of users were not fully satisfied with their experience, often due to isolated issues with specific features or compatibility. While most found the product to be satisfactory, these users highlighted areas for improvement to enhance the overall user experience.

88%
Metering Accuracy

84% of users were satisfied with the metering accuracy of the MOTU M4, noting the clear and precise visual feedback provided during recording and playback. Users appreciated the detailed meters that allowed for effective monitoring of audio levels.

16% of users encountered issues with metering accuracy, often related to discrepancies between the interface's meters and those in their DAW. Some users found the visual feedback less responsive or precise than expected, impacting their ability to accurately monitor levels.

84%
Output Quality

90% of users were impressed with the output quality of the MOTU M4, highlighting its clear and detailed sound reproduction. Many users noted the high-quality headphone and line outputs, which provided accurate audio representation for mixing and monitoring.

10% of users were not satisfied with the output quality, often due to specific issues with their setup or preferences. Some users experienced faint noise or distortion, which they attributed to external factors or mismatched equipment rather than the interface itself.

90%

Pros:
High-quality preamps with Air mode for enhanced sound. USB-C connectivity for faster data transfer and better compatibility. Compact and portable design. Comprehensive software bundle included. Low latency performance.	High-quality audio performance with ESS Sabre32 Ultra DAC technology. Ultra-low latency performance, making it suitable for real-time monitoring. Comprehensive metering with full-color LCD display for precise level monitoring. USB-C connectivity ensures fast data transfer and compatibility with modern devices. Sturdy build quality and compact design, ideal for portable use. Loopback functionality for easy live streaming and podcasting.

Pros:

High-quality preamps with Air mode for enhanced sound.
USB-C connectivity for faster data transfer and better compatibility.
Compact and portable design.
Comprehensive software bundle included.
Low latency performance.

High-quality audio performance with ESS Sabre32 Ultra DAC technology.
Ultra-low latency performance, making it suitable for real-time monitoring.
Comprehensive metering with full-color LCD display for precise level monitoring.
USB-C connectivity ensures fast data transfer and compatibility with modern devices.
Sturdy build quality and compact design, ideal for portable use.
Loopback functionality for easy live streaming and podcasting.

Cons:
Limited to 4 inputs and 4 outputs, which may not be sufficient for larger setups. No built-in DSP for real-time effects. Requires external power supply for full functionality. MIDI I/O ports may be redundant for users who don't use MIDI hardware.	Limited to 4 inputs and 4 outputs, which may not be sufficient for larger setups. No built-in DSP effects, which could limit flexibility for some users. Only USB bus-powered, which might not be ideal for all scenarios. No ADAT or S/PDIF connectivity, limiting expansion options.

Key Specs
Channels of I/O
Analog: 4 Inputs / 4 Outputs at 192 kHz	Analog: 4 Inputs / 4 Outputs
Maximum Sampling Rate
192 kHz / 24-Bit	192 kHz / 24-Bit
Number of Microphone Inputs
2	2 Preamps
Analog Audio I/O
2x Combo XLR-1/4" 3-Pin Balanced/Unbalanced Mic/Line/Hi-Z Input (Front Panel) 2x 1/4" TRS Balanced/Unbalanced Line Input 4x 1/4" TRS Balanced/Unbalanced Line/Monitor Output 1x 1/4" TRS Headphone Output (Front Panel)	2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 2x 1/4" TRS Balanced Line Input 1x 1/4" TRS Unbalanced Headphone Output 4x 1/4" TRS Balanced Line Output (DC-Coupled) 4x RCA TS Unbalanced Line Output
Host Connection
1x USB-C	1x USB-C
OS Compatibility
macOS Windows	macOS 10.11 or Later Windows 7 or Later 9 or Later
Power Requirements
USB Bus Power, USB Power Adapter (Not Included)	USB Bus Power

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface share several similarities but also possess distinct features that cater to different user preferences.
Both interfaces support a maximum sampling rate of 192 kHz at 24-bit, ensuring high-resolution audio recording and playback. They each provide 4 analog inputs and 4 analog outputs, suitable for a variety of recording and monitoring setups.
The Focusrite Scarlett 4i4 offers 2 combo XLR-1/4" inputs that can handle mic, line, and Hi-Z signals, located on the front panel. Additionally, it provides 2 more 1/4" TRS inputs for line-level signals. For outputs, it includes 4x 1/4" TRS balanced/unbalanced line/monitor outputs and a single 1/4" TRS headphone output on the front panel. The Scarlett 4i4 does not feature any digital audio I/O and is compatible with both macOS and Windows operating systems. It can be powered via USB bus power or an optional USB power adapter, though the adapter is not included.
In comparison, the MOTU M4 also comes equipped with 2 combo XLR-1/4" TRS inputs on the front panel, similarly accommodating mic, line, and Hi-Z signals. It includes 2 additional 1/4" TRS balanced line inputs. The MOTU M4 expands its output options with 4x 1/4" TRS balanced line outputs that are DC-coupled and 4x RCA TS unbalanced line outputs. It also has a 1/4" TRS unbalanced headphone output. The MOTU M4 is compatible with macOS 10.11 or later, Windows 7 or later, and iOS 9 or later, offering broader OS compatibility. It is powered solely via USB bus power.
In summary, while both interfaces provide high-quality audio performance and similar I/O configurations, the MOTU M4 stands out with its additional RCA outputs and broader OS compatibility, whereas the Focusrite Scarlett 4i4 offers a streamlined setup with flexible power options.

General
Channels of I/O
Analog: 4 Inputs / 4 Outputs at 192 kHz	Analog: 4 Inputs / 4 Outputs
Maximum Sampling Rate
192 kHz / 24-Bit	192 kHz / 24-Bit
Number of Microphone Inputs
2	2 Preamps
Input Level Adjustment
2x Knob	2x Knob
Expansion Slots

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface both offer robust audio solutions with a variety of features suitable for professional audio recording and production. Both interfaces support analog I/O channels with 4 inputs and 4 outputs at a maximum sampling rate of 192 kHz / 24-bit, providing high-resolution audio.
The Scarlett 4i4 features two microphone inputs, each with its own knob for input level adjustment, but does not have built-in DSP or built-in microphones. This model also lacks expansion slots, making it a straightforward solution without additional onboard processing capabilities.
Similarly, the MOTU M4 also includes two microphone preamps with individual input level adjustment knobs. Like the Scarlett 4i4, the MOTU M4 does not have built-in DSP or expansion slots, focusing instead on delivering high-quality audio without additional onboard processing.
In summary, both interfaces offer identical channel I/O configurations and maximum sampling rates. They both provide two microphone inputs with individual level adjustments via knobs and do not include built-in DSP, built-in microphones, or expansion slots, making them comparable in terms of core specifications and features.

Signal Processing
Gain/Trim Range
Mic/Line Inputs: Up to +69 dB Hi-Z Inputs: 62 dB	Mic Inputs: 0 dB to +60 dB Line/Hi-Z Inputs: 0 dB to +57 dB

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface both serve as robust solutions for audio recording and MIDI interfacing, but they differ in several key features.
In terms of gain/trim range, the Focusrite Scarlett 4i4 offers a more extensive range. For mic/line inputs, it provides up to +69 dB, and for Hi-Z inputs, it offers up to 62 dB. On the other hand, the MOTU M4 provides a gain range of 0 dB to +60 dB for mic inputs and 0 dB to +57 dB for line/Hi-Z inputs. This indicates that the Scarlett 4i4 may offer more headroom and flexibility for input levels, especially for high-gain applications.
The MOTU M4 lacks several features that are either present or implied in other interfaces. Notably, it does not include a pad, high-pass filter, or solo/mute options. This simplicity might be suitable for users who prefer a straightforward interface without extra features, but it might be a limitation for those who need more advanced input management and signal processing options.
Overall, the Focusrite Scarlett 4i4 appears to offer more versatile input options with its higher gain/trim range, which could be advantageous for recording a wider variety of sources. The MOTU M4, while potentially simpler to use, might be less appealing for those requiring additional input controls and processing features.

Connectivity
Analog Audio I/O
2x Combo XLR-1/4" 3-Pin Balanced/Unbalanced Mic/Line/Hi-Z Input (Front Panel) 2x 1/4" TRS Balanced/Unbalanced Line Input 4x 1/4" TRS Balanced/Unbalanced Line/Monitor Output 1x 1/4" TRS Headphone Output (Front Panel)	2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 2x 1/4" TRS Balanced Line Input 1x 1/4" TRS Unbalanced Headphone Output 4x 1/4" TRS Balanced Line Output (DC-Coupled) 4x RCA TS Unbalanced Line Output
Phantom Power
48 V, Selectable On/Off	48 V, Selectable On/Off (Selectable on Individual Inputs)
Digital Audio I/O

Host Connection
1x USB-C	1x USB-C
Host Connection Protocol
USB 2.0	USB 2.0
USB (Non-Host)
1x USB-C (Power Input)
Sync I/O

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 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface both feature robust analog and digital connectivity options, though they cater to slightly different needs and preferences in their design and functionality.
The Focusrite Scarlett 4i4 offers 2x combo XLR-1/4" 3-pin balanced/unbalanced mic/line/Hi-Z inputs on the front panel, as well as 2x 1/4" TRS balanced/unbalanced line inputs. It provides 4x 1/4" TRS balanced/unbalanced line/monitor outputs in addition to a 1/4" TRS headphone output, also on the front panel. Phantom power is selectable at 48 V. For MIDI connectivity, it includes 1x DIN 5-pin input and 1x DIN 5-pin output. Notably, the Scarlett 4i4 utilizes a USB-C connection for the host with USB 2.0 protocol and requires a separate USB-C power input.
In contrast, the MOTU M4 features similar analog audio I/O with 2x combo XLR-1/4" TRS balanced/unbalanced mic/line/Hi-Z inputs and 2x 1/4" TRS balanced line inputs. Its outputs differ slightly, with 4x 1/4" TRS balanced line outputs (DC-coupled) and 4x RCA TS unbalanced line outputs, providing more flexibility for different output requirements. The M4 also includes a 1/4" TRS unbalanced headphone output. Phantom power is selectable at 48 V and is individually selectable on each input. Like the Scarlett 4i4, the M4 features 1x DIN 5-pin input and 1x DIN 5-pin output for MIDI connectivity, and it connects to the host via USB-C with USB 2.0 protocol. However, it does not require an additional USB-C power input.
Both interfaces offer similar front panel inputs and MIDI I/O, but the M4 provides additional RCA outputs and selectable phantom power on individual inputs, possibly making it more versatile for certain setups. The Scarlett 4i4, on the other hand, offers a straightforward setup with a dedicated USB-C power input, potentially appealing to users looking for a simpler power solution.

Performance
Frequency Response
Combo XLR-1/4" Mic Inputs: 20 Hz to 20 kHz ±0.06 dB Combo XLR-1/4" Line Inputs: 20 Hz to 20 kHz ±0.05 dB Combo XLR-1/4" Hi-Z Inputs: 20 Hz to 20 kHz ±0.15 dB 1/4" Line Inputs: 20 Hz to 20 kHz ±0.02 dB	Mic Inputs: 20 Hz to 20 kHz +0/-0.1 dB Line, Hi-Z Inputs: 20 Hz to 20 kHz ±0.15 dB Line Inputs: 20 Hz to 20 kHz ±0.07 dB Line Outputs: 20 Hz to 20 kHz +0/-0.1 dB
Maximum Input Level
Combo XLR-1/4" Mic: 16 dBu Combo XLR-1/4" Line: 22 dBu Combo XLR-1/4" Hi-Z: 12 dBu 1/4" Line: 22 dBu	Mic Inputs: +10 dBu (Min Gain) Line/Hi-Z Inputs: +16 dBu (Min Gain) Line Inputs: +18 dBu (Min Gain)
Maximum Output Level
1/4" Line: +16 dBu	Line Outputs: +16 dBu (Balanced) Line Outputs: +9.5 dBu (Unbalanced) Headphone Outputs: +12.5 dBu
Impedance
Combo XLR-1/4" Mic Inputs: 3 Kilohms Combo XLR-1/4" Line Inputs: 60 Kilohms Combo XLR-1/4" Hi-Z Inputs: 1 Megohms 1/4" Line Inputs: 60 Kilohms 1/4" Line Outputs: 100 Ohms 1/4" Headphone Outputs: < 11 Ohm	Mic Inputs: 2.65 Kilohms Line Inputs: 2 Megohms Hi-Z Inputs: 1 Megohm Line Outputs: 100 Ohms
Dynamic Range
Combo XLR-1/4" Mic Inputs: 116 dBA Combo XLR-1/4" Line Inputs: 115.5 dBA Combo XLR-1/4" Hi-Z Inputs: 113 dBA 1/4" Line Inputs: 115.5 dBA 1/4" Line Outputs: 120 dB 1/4" Headphone: 112 dB (at 33 Ohms) 115 dB (at 300 Ohms) Digital A/D Converters: 130 dB Digital D/A Converters: 130 dBA	Mic Inputs: 115 dBA Line/Hi-Z Inputs: 114 dBA Line Inputs: 115 dBA Line/Monitor Outputs: 120 dBA RCA Outputs: 119 dBA Headphone Outputs: 115 dBA
THD+N
Combo XLR-1/4" Mic Inputs: -100 dB (at 8 dB Gain) Combo XLR-1/4" Line Inputs: -100 dB (at 8 dB Gain) Combo XLR-1/4" Hi-Z Inputs: -80 dB (at Minimum Gain) 1/4" Line Inputs: -105 dB 1/4" Line Outputs: -112 dB 1/4" Headphone Outputs: -99 dB (at 33 Ohms) -108 dB (at 300 Ohms) Digital A/D Converters: -115 dB Digital D/A Converters: -115 dB	Mic Inputs: < -97 dB / < 0.0014% Line/Hi-Z Inputs: < -100 dB / < 0.001% Line Inputs: < -106 dB / < 0.0005% Line/Monitor Outputs: < -110 dB / < 0.00032% RCA Outputs: < -105 dB / < 0.00056% Headphone Outputs: < -110 dB / < 0.0003%
EIN
Combo XLR-1/4" Mic Inputs: -127 dBu A-Weighted	Mic Inputs: -129 dB A-Weighted (150-Ohm Source, Max Gain)

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface are two high-performance audio interfaces designed for professional and home studio use. They offer a range of features, including multiple inputs and outputs, high dynamic range, and low total harmonic distortion plus noise (THD+N). Here, we compare the two interfaces based on the specified features.
In terms of frequency response, the Focusrite Scarlett 4i4 provides a flat response across various input types, with a range of 20 Hz to 20 kHz and deviations as low as ±0.02 dB for 1/4" line inputs. The MOTU M4 also covers the full 20 Hz to 20 kHz range but with slightly higher deviations, such as ±0.1 dB for mic inputs and ±0.15 dB for line and Hi-Z inputs.
Regarding maximum input levels, the Focusrite Scarlett 4i4 accommodates up to 16 dBu for XLR-1/4" mic inputs, 22 dBu for line inputs, and 12 dBu for Hi-Z inputs. In contrast, the MOTU M4 supports up to +10 dBu for mic inputs, +16 dBu for Hi-Z inputs, and +18 dBu for line inputs, showing a slightly higher maximum input level for line inputs compared to the Scarlett 4i4.
For maximum output levels, both interfaces offer +16 dBu for balanced line outputs. However, the MOTU M4 provides an additional detail with its unbalanced line outputs at +9.5 dBu and headphone outputs at +12.5 dBu, which is higher than the Scarlett 4i4's headphone outputs of 57 mW into 33 Ohms and 27 mW into 300 Ohms.
Impedance values are also crucial for matching sources and loads. The Focusrite Scarlett 4i4 presents an impedance of 3 Kilohms for mic inputs, 60 Kilohms for line inputs, 1 Megohm for Hi-Z inputs, and 100 Ohms for line outputs. The MOTU M4 features lower mic input impedance at 2.65 Kilohms but higher line input impedance at 2 Megohms, while maintaining the same 100 Ohms for line outputs.
Dynamic range is a measure of the interface's ability to handle various signal levels without distortion. The Focusrite Scarlett 4i4 boasts a high dynamic range, with 116 dBA for mic inputs, 115.5 dBA for line inputs, and 120 dB for line outputs. The MOTU M4 closely matches this performance with a dynamic range of 115 dBA for mic inputs and 120 dBA for line/monitor outputs, indicating similar capabilities in handling dynamic audio signals.
When comparing THD+N, the Focusrite Scarlett 4i4 has very low distortion levels, with -100 dB for mic and line inputs and -112 dB for line outputs. The MOTU M4 performs similarly, with mic inputs at < -97 dB and line inputs at < -106 dB. Both interfaces thus ensure minimal distortion, providing clean and accurate audio reproduction.
Lastly, the Equivalent Input Noise (EIN) for mic inputs is an important factor for capturing quiet sources without added noise. The Focusrite Scarlett 4i4 has an EIN of -127 dBu A-weighted, whereas the MOTU M4 slightly outperforms it with an EIN of -129 dB A-weighted, indicating a marginally lower noise floor.
In summary, both the Focusrite Scarlett 4i4 and the MOTU M4 offer robust features suitable for various recording applications. The Scarlett 4i4 excels in input level handling and impedance matching, while the MOTU M4 offers slightly better maximum input levels, dynamic range for line outputs, and lower EIN for mic inputs. Each interface provides excellent performance, but the choice between them may come down to specific needs regarding input handling, output power, and noise performance.

Digital Audio
Sample Rates
44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz	Up to 192 kHz
Bit Depths
24-Bit	24-Bit
Sync Sources
Internal	Internal

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface are both high-quality audio interfaces designed for professional and home studio use, yet they offer distinct features that cater to different needs.
The Focusrite Scarlett 4i4 supports a range of sample rates including 44.1, 48, 88.2, 96, 176.4, and 192 kHz, allowing for versatile recording options. It operates at a bit depth of 24-bit, ensuring high-resolution audio capture. The sync source for the Scarlett 4i4 is internal, maintaining a simplified setup for users who do not need external synchronization.
On the other hand, the MOTU M4 also supports sample rates up to 192 kHz, providing equally high-quality recording capabilities. It too operates at a bit depth of 24-bit. One significant feature of the MOTU M4 is its zero-latency direct monitoring, providing real-time tracking without delay, which is particularly beneficial during live recording sessions. The latency is specified at 2.5 ms at 96 kHz, although this can vary depending on the buffer size and specific hardware configurations. Similar to the Scarlett 4i4, the MOTU M4 uses an internal sync source.
In summary, both interfaces offer robust audio recording capabilities with sample rates up to 192 kHz and 24-bit depth. The Focusrite Scarlett 4i4 provides a straightforward internal sync source and a variety of sample rates, making it a versatile choice for various recording scenarios. The MOTU M4 stands out with its zero-latency direct monitoring feature, which is ideal for users who prioritize real-time performance. Both interfaces are excellent choices, but the MOTU M4 may have a slight edge for those who need immediate audio feedback during recording.

Audio Storage & Playback

Compatibility
OS Compatibility
macOS Windows	macOS 10.11 or Later Windows 7 or Later 9 or Later

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface are both well-regarded options in the realm of audio interfaces, each bringing distinct features tailored to various user needs.
When it comes to OS compatibility, the Focusrite Scarlett 4i4 supports both macOS and Windows, with additional compatibility for iPadOS via a mobile app. This makes it a versatile option for users who may want to use it with multiple devices, including iPads for mobile recording setups.
In contrast, the MOTU M4 also supports both macOS (10.11 or later) and Windows (7 or later), but it does not mention specific compatibility with mobile operating systems like iPadOS. This may limit its usage in more portable or iOS-centered recording environments.
Focusing on processor requirements, the MOTU M4 specifies that it requires a 1 GHz Intel processor for both Mac and PC users. Additionally, it recommends having at least 2 GB of RAM, with 4 GB being preferable. It also explicitly states the need for an available USB 2.0 port and an internet connection for software or driver downloads, ensuring users are aware of these prerequisites for optimal performance. The inclusion of the necessary USB cable is a thoughtful touch, ensuring that users have everything they need to get started right out of the box.
The Focusrite Scarlett 4i4 does not provide specific details regarding processor requirements, RAM, or the need for an internet connection for driver downloads in its basic specifications. This lack of detailed hardware requirements might suggest a broader compatibility with different system configurations but could also leave users guessing about the minimum system requirements needed for optimal performance.
In summary, both interfaces offer robust OS compatibility with macOS and Windows, but the Focusrite Scarlett 4i4 extends its versatility with iPadOS support. On the other hand, the MOTU M4 provides detailed hardware requirements, ensuring users are well-informed about the necessary system specifications for smooth operation. Each interface brings its strengths to the table, catering to different user needs and preferences in the audio recording landscape.

Power
Power Requirements
USB Bus Power, USB Power Adapter (Not Included)	USB Bus Power

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface both offer USB bus power capabilities, but they differ in their additional power requirements and power consumption.
The Focusrite Scarlett 4i4 (4th Generation) can be powered via USB bus power or an optional USB power adapter, providing flexibility depending on the user's setup. Additionally, it includes a 5 VDC at 3 A AC/DC power adapter. The unit consumes 7.5 W of power, which indicates a need for a relatively moderate power draw compared to some other audio interfaces.
On the other hand, the MOTU M4 USB-C Audio-MIDI Interface is strictly powered via USB bus power, simplifying the power requirements but also potentially limiting its use to scenarios where sufficient USB power is available. This could be advantageous for users who prefer a more straightforward setup without the need for additional power adapters.
In summary, the Focusrite Scarlett 4i4 offers more versatility with multiple power options and comes with an AC/DC adapter, while the MOTU M4 focuses on simplicity by relying solely on USB bus power. The higher power consumption of the Scarlett 4i4 may reflect its broader feature set or more complex internals, whereas the MOTU M4’s USB-only power requirement might make it more convenient for certain users but with potential limitations in power availability.

Physical
Dimensions
7.09 x 5.08 x 2.32" / 18.01 x 12.9 x 5.89 cm	8.25 x 4.25 x 1.75" / 20.96 x 10.79 x 4.45 cm (Chassis Only)
Weight
1.8 lb / 816.0 g	1.6 lb / 0.7 kg

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface each offer unique specifications that cater to different user needs.
In terms of dimensions, the Focusrite Scarlett 4i4 measures 7.09 x 5.08 x 2.32 inches (18.01 x 12.9 x 5.89 cm), making it a relatively compact and portable option. On the other hand, the MOTU M4 is slightly larger with dimensions of 8.25 x 4.25 x 1.75 inches (20.96 x 10.79 x 4.45 cm), giving it a slightly different form factor that may appeal to users with specific space requirements.
Regarding weight, the Focusrite Scarlett 4i4 weighs in at 1.8 lb (816.0 g), which is slightly heavier compared to the MOTU M4, which weighs 1.6 lb (0.7 kg). The difference in weight might be a minor consideration for users who prioritize portability.
The MOTU M4 includes an anti-theft feature with a Kensington Security Slot, offering additional security for users who need to protect their device in various environments. The Focusrite Scarlett 4i4 does not list any specific anti-theft features, which might be a consideration for users in settings where security is a concern.
Overall, both interfaces provide robust features suitable for different studio and recording needs, with the Focusrite Scarlett 4i4 being slightly more compact and the MOTU M4 offering additional security features.

Packaging Info
Package Weight
3.185 lb	2.15 lb
Box Dimensions (LxWxH)
11.2 x 8 x 3.6"	10.6 x 7.3 x 2.8"

The Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface (4th Generation) and the MOTU M4 USB-C Audio-MIDI Interface offer distinct approaches in their packaging and dimensions that might influence a user's choice depending on their specific needs and preferences.
The Focusrite Scarlett 4i4 (4th Generation) comes with a package weight of 3.185 lb and box dimensions measuring 11.2 x 8 x 3.6 inches. This indicates a robust packaging strategy that likely ensures the device's safety during transport, with a slightly larger footprint that could accommodate additional accessories or more substantial padding.
On the other hand, the MOTU M4 USB-C Audio-MIDI Interface is packaged with a weight of 2.15 lb, making it noticeably lighter than the Scarlett 4i4. Its box dimensions are 10.6 x 7.3 x 2.8 inches, which suggests a more compact and potentially more portable solution. The smaller size could be advantageous for users with limited desk space or those who prioritize ease of transportation.
In conclusion, the Focusrite Scarlett 4i4's heavier weight and larger dimensions may appeal to users looking for a more substantial feel and possibly more comprehensive accessory inclusion. Meanwhile, the MOTU M4's lighter and more compact packaging might be preferable for users seeking portability and space efficiency.