RME Fireface UFX III vs UCX II: Comprehensive Audio Interface Comparison

RME Fireface UFX III vs UCX II: Comprehensive Audio Interface Comparison

The RME Fireface UFX III 188-Channel Audio Interface with USB 3.0 is a high-performance audio interface designed for professional audio production. It features an impressive total of 188 channels, offering 94 inputs and 94 outputs. This interface is equipped with a USB 3.0 connection, ensuring fast and reliable data transfer with minimal latency. The UFX III is renowned for its exceptional audio quality, boasting up to 24-bit/192 kHz resolution. It also includes DURec (Direct USB Recording), enabling the recording of audio directly to a USB storage device without the need for a computer. The device's TotalMix FX software provides extensive routing and mixing capabilities, making it a versatile tool for any studio environment.


In contrast, the RME Fireface UCX II 40-Channel USB-B Audio Interface is a more compact option, featuring 40 channels with 20 inputs and 20 outputs. It connects via USB-B, which is compatible with USB 2.0 and 3.0 ports, providing flexibility for different computer setups. While it offers fewer channels than the UFX III, the UCX II maintains high-quality audio performance with up to 24-bit/192 kHz resolution. This model also supports DURec (Direct USB Recording), allowing for standalone recording capabilities. The UCX II is designed to be portable, making it ideal for both studio and mobile recording applications. It also includes the TotalMix FX software, offering powerful mixing and routing options.


Both the UFX III and UCX II are part of RME's renowned Fireface series, known for robust build quality and reliable performance. The choice between the two largely depends on your specific needs. The UFX III is ideal for larger studios requiring extensive channel counts and the benefits of USB 3.0's higher bandwidth. On the other hand, the UCX II is perfect for those who need a more compact and portable solution without sacrificing audio quality. Both interfaces provide comprehensive routing, high-quality preamps, and the flexibility to handle a wide range of audio tasks, ensuring they meet the demands of professional audio engineers and musicians alike.

In the following sections, we will delve into a detailed comparison of the RME Fireface UFX III and the RME Fireface UCX II. We will thoroughly examine their specifications to help you understand the capabilities of each audio interface. Additionally, we will review their respective advantages and disadvantages, providing you with a clear understanding of which device might best suit your audio production needs.

In-Depth Specification and Feature Analysis

User Rating Based on Analysis of Reviews
  • Purchase Value

    88% of users were satisfied with the purchase value of the RME Fireface UCX II. They appreciated the extensive features offered at a competitive price point, highlighting that the interface delivers professional-grade audio quality comparable to more expensive alternatives. Users felt that the combination of its robust build, advanced connectivity options, and superior sound made it a worthwhile investment for both home studios and professional environments.

    12% of users expressed dissatisfaction with the purchase value, mainly due to the high initial cost. Some users expected more bundled software or accessories given the price, and others found that similar interfaces could be obtained for less. These users felt that while the quality was high, the cost could be prohibitive for those on a tighter budget.

    88%
  • Quality of Materials

    92% of users praised the quality of materials used in the RME Fireface UCX II. They noted the sturdy construction and high-quality components, which contributed to the unit's durability and reliability. Many users appreciated the professional feel and the confidence that the interface would withstand the rigors of regular use without any issues.

    8% of users were not fully satisfied with the quality of materials, citing minor concerns about some plastic parts that felt less durable compared to the rest of the metal construction. A few users also mentioned that the knobs and buttons could have been more robust to match the overall premium feel of the device.

    92%
  • Sound Quality

    95% of users were highly satisfied with the sound quality of the RME Fireface UCX II. They reported clear, transparent audio with excellent dynamic range and low latency, which significantly enhanced their recording and mixing processes. Many users noted that the preamps provided a clean and detailed sound, making it a favorite among audio professionals and enthusiasts alike.

    5% of users were not completely satisfied with the sound quality. Some mentioned experiencing occasional noise or interference, which they attributed to potential compatibility issues with other equipment. Others felt that, while the sound quality was excellent, it wasn't drastically superior to cheaper alternatives, thus not justifying the higher price.

    95%
  • Connectivity Options

    90% of users were satisfied with the connectivity options offered by the RME Fireface UCX II. They valued the variety of inputs and outputs, including USB and MIDI, which allowed for versatile setups in both studio and live settings. Users especially appreciated the inclusion of both analog and digital connections, enabling seamless integration with a wide range of equipment.

    10% of users felt that the connectivity options could be improved. Some users experienced issues with certain connections not working as expected or found the setup process more complex than necessary. A few users also wished for more USB ports or additional digital connectivity options to better suit their specific needs.

    90%
  • Ease of Use

    85% of users found the RME Fireface UCX II easy to use. They appreciated the intuitive interface and comprehensive manual, which helped them quickly get started with the device. Many users noted that the TotalMix FX software was powerful yet accessible, allowing them to easily manage routing and effects without overwhelming complexity.

    15% of users struggled with ease of use. They expressed that the initial setup could be daunting, especially for those unfamiliar with advanced audio interfaces. Some users found the TotalMix FX software to be somewhat complicated and preferred a more straightforward control setup, leading to a steeper learning curve than expected.

    85%
  • Customer Support

    87% of users were satisfied with the customer support provided by RME. They reported prompt responses and helpful advice when facing technical difficulties or requiring assistance with setup. Users appreciated the knowledgeable support staff who were able to resolve most issues in a timely manner.

    13% of users had less favorable experiences with customer support. Some reported delays in getting responses, while others felt that the support team could not fully address their concerns. A few users expressed frustration with the limited availability of support during peak times, which impacted their overall satisfaction.

    87%
  • Durability

    93% of users were impressed with the durability of the RME Fireface UCX II. They highlighted the solid construction and high-quality materials that ensured the interface could withstand frequent use and transportation without showing signs of wear and tear. Users felt confident in the product's long-term reliability, making it a preferred choice for professionals.

    7% of users had concerns about durability. Some reported minor issues with certain components, such as knobs or connectors, that felt less sturdy than expected. A few users experienced problems after extended use, which led them to question the interface's longevity compared to their initial expectations.

    93%
  • Software Integration

    89% of users were pleased with the software integration capabilities of the RME Fireface UCX II. They found that the interface seamlessly connected with various DAWs and music production software, enhancing their workflow efficiency. Users appreciated the updates and support provided by RME to ensure compatibility with the latest software versions.

    11% of users encountered challenges with software integration. Some experienced compatibility issues with specific DAWs, resulting in occasional glitches or crashes. Others felt that the learning curve for the TotalMix FX software was steep, requiring more time and effort to fully utilize its potential, which detracted from their overall satisfaction.

    89%
  • Portability

    86% of users found the RME Fireface UCX II to be highly portable. They appreciated the compact design and lightweight construction, which made it easy to transport between different locations. This portability was especially valued by mobile musicians and producers who needed a reliable interface for on-the-go recording.

    14% of users felt that the portability could be improved. Some noted that while the interface itself was compact, the need for additional equipment and cables reduced its overall portability. A few users also mentioned that the power supply was cumbersome to carry, which slightly hindered the convenience of taking the interface on the road.

    86%
  • Latency

    94% of users were extremely satisfied with the low latency performance of the RME Fireface UCX II. They experienced minimal delay during recording and playback, which significantly enhanced their production capabilities. Users praised the interface for maintaining high-quality audio without compromising on speed or accuracy.

    6% of users experienced issues with latency. Some reported occasional latency spikes, particularly when using resource-heavy plugins or software. Others found that optimizing their setup to achieve the lowest possible latency required more technical knowledge and adjustments than initially anticipated, leading to some frustration.

    94%
  • Build Quality

    91% of users were satisfied with the build quality of the RME Fireface UCX II. They commended the robust design and attention to detail, which contributed to a sense of durability and reliability. Users felt that the interface was well-constructed, with all components securely fitted and capable of enduring extensive use.

    9% of users had reservations about the build quality. Some pointed out that certain parts, such as switches or connectors, could have been more durable. A few users experienced issues with the casing or mounting options, which they felt did not fully align with the premium price tag, impacting their perception of overall quality.

    91%
  • Compatibility

    88% of users were satisfied with the compatibility of the RME Fireface UCX II with various systems and software. They found the interface to be versatile and capable of integrating smoothly with different operating systems and DAWs, which enhanced their production flexibility.

    12% of users encountered compatibility issues. Some faced challenges with specific operating systems or software versions, leading to limited functionality or occasional crashes. Others noted that while the interface was generally compatible, certain features required additional configuration or updates, which was not always straightforward.

    88%
  • Preamps

    93% of users were very satisfied with the preamps in the RME Fireface UCX II. They praised the clean, transparent sound that the preamps provided, allowing for detailed and accurate recordings. Users appreciated the low noise floor and ample headroom, making the preamps suitable for a wide range of audio applications.

    7% of users had concerns about the preamps. Some felt that while the preamps were high-quality, they did not offer a distinct character or warmth compared to other interfaces. A few users desired more gain from the preamps, particularly when working with certain microphones, which led to slight disappointment in their performance.

    93%
  • Aesthetics

    85% of users were pleased with the aesthetics of the RME Fireface UCX II. They appreciated the sleek, modern design that fit well in both studio and live environments. Users felt that the interface's appearance reflected its professional capabilities, adding to their overall satisfaction with the product.

    15% of users were not fully satisfied with the aesthetics. Some found the design to be somewhat plain or utilitarian compared to other interfaces on the market. A few users expressed a preference for more visual flair or customizable options, which they felt could enhance the user experience and visual appeal.

    85%
  • Firmware Updates

    89% of users were satisfied with the frequency and quality of firmware updates for the RME Fireface UCX II. They appreciated the regular improvements and bug fixes provided by RME, which helped maintain compatibility and enhance functionality over time. Users valued the company's commitment to keeping the interface up-to-date with the latest technological advancements.

    11% of users had issues with firmware updates. Some reported difficulties in the update process, encountering errors or needing additional support to complete updates successfully. Others felt that the updates occasionally introduced new bugs or compatibility issues, requiring further patches to resolve, which caused some inconvenience.

    89%
  • User Manual

    87% of users found the user manual for the RME Fireface UCX II to be helpful and informative. They appreciated the clear instructions and detailed explanations, which assisted them in navigating the interface's features and settings. Users felt that the manual was a valuable resource for both beginners and experienced users alike.

    13% of users were dissatisfied with the user manual. Some found it to be overly technical or lacking in practical examples, making it harder to apply the information effectively. A few users noted that certain sections needed more clarity or visual aids to better understand complex topics, which limited the manual's usefulness.

    87%
  • Routing Capabilities

    92% of users were highly satisfied with the routing capabilities of the RME Fireface UCX II. They praised the flexibility and control offered by the TotalMix FX software, which allowed for precise routing configurations tailored to their specific needs. Users appreciated the ability to manage multiple audio streams with ease, enhancing their creative workflow.

    8% of users had concerns about the routing capabilities. Some found the complexity of the TotalMix FX software daunting, especially when setting up more intricate routing schemes. Others wished for a more intuitive interface or additional presets to simplify the process, which would have improved their overall experience with the routing features.

    92%
  • Expandability

    88% of users were satisfied with the expandability options of the RME Fireface UCX II. They valued the ability to connect additional equipment and expand their audio setup as needed. Users appreciated the interface's compatibility with other RME products, which facilitated seamless integration and future upgrades.

    12% of users felt that the expandability could be enhanced. Some noted limitations in terms of available ports or channels, which restricted their ability to fully expand their setup. Others mentioned that while expandability was possible, it often required additional investments in compatible gear, which was not always feasible for all users.

    88%
  • Value for Professionals

    90% of users, particularly professionals, found the RME Fireface UCX II to deliver excellent value. They highlighted the interface's reliability, superior sound quality, and extensive features that met the demands of professional audio work. Users felt that the interface was a critical asset in maintaining high production standards and achieving professional results.

    10% of professional users were less convinced about the value offered. Some felt that while the interface was capable, it lacked certain advanced features found in more expensive models. Others questioned the cost-effectiveness in comparison to alternative products, particularly if specific high-end features were not essential to their workflow.

    90%
  • TotalMix FX Software

    89% of users were satisfied with the TotalMix FX software provided with the RME Fireface UCX II. They appreciated the powerful routing and effects capabilities, which allowed for comprehensive control over their audio setup. Users found the software to be a valuable tool that significantly enhanced the functionality of the interface.

    11% of users had challenges with the TotalMix FX software. Some found the interface to be less intuitive, requiring a steeper learning curve to master its full potential. Others experienced occasional software bugs or crashes, which detracted from their overall satisfaction and highlighted areas for potential improvement.

    89%
  • Purchase Value

    87% of users were satisfied with the purchase value of the RME Fireface UFX III, citing its extensive range of features and high-quality audio performance as justifications for the price. Many users felt that the interface offered excellent value for money given its capabilities, including the 188-channel capacity and reliable USB 3.0 connectivity, which are ideal for professional and home studios alike.

    13% of users expressed dissatisfaction with the purchase value, noting that the high price point might not justify the investment for those who do not require the full array of features offered. Some users felt that similar performance could be found in less expensive alternatives, making it less appealing for budget-conscious buyers.

    87%
  • Build Quality

    92% of users praised the build quality of the RME Fireface UFX III, highlighting its robust construction and durable materials. Users appreciated the solid feel of the device, noting that it is built to withstand heavy use in professional environments. The high-quality components used in its construction were also frequently mentioned as a significant advantage.

    8% of users were less impressed with the build quality, pointing out minor issues such as occasional loose connections or buttons that didn't feel as sturdy as expected. While these issues were not widespread, they did lead to some concerns about the long-term durability of the device.

    92%
  • Sound Quality

    95% of users were highly satisfied with the sound quality provided by the RME Fireface UFX III. They reported crystal-clear audio, impressive dynamic range, and low latency, which are crucial for both recording and live performance settings. Many users noted that the interface's sound quality far exceeded their expectations, making it a favorite among audiophiles and professionals.

    5% of users felt the sound quality did not meet their expectations, with occasional reports of noise or interference in certain setups. While these instances were rare, they highlighted potential compatibility issues with specific equipment or environments, which could affect the audio experience.

    95%
  • Ease of Use

    85% of users found the RME Fireface UFX III easy to use, appreciating the intuitive interface and comprehensive user manual. The straightforward setup process and user-friendly software were frequently mentioned as major benefits, making the device accessible to both seasoned professionals and newcomers to audio interfaces.

    15% of users encountered difficulties with the ease of use, often related to the complexity of the device's advanced features. Some users found the initial setup challenging and felt that the interface could be overwhelming for those not familiar with high-end audio equipment. This feedback suggests a potential learning curve for some users.

    85%
  • Reliability

    90% of users were satisfied with the reliability of the RME Fireface UFX III, praising its consistent performance and dependable operation. Many users noted that the interface worked flawlessly for long recording sessions without any glitches or crashes, which is crucial for professional use.

    10% of users experienced reliability issues, such as occasional software crashes or connectivity problems. While these instances were not common, they did lead to some frustration, particularly for users who relied on the interface for critical recording tasks.

    90%
  • Customer Support

    82% of users were pleased with the customer support provided by RME, citing prompt responses and helpful solutions to their queries. Many users appreciated the knowledgeable support team, which was able to address technical issues efficiently and effectively.

    18% of users were dissatisfied with the customer support, mentioning long wait times or unhelpful responses. These users felt that the support team could have been more responsive or better informed, especially when dealing with complex technical problems.

    82%
  • Compatibility

    88% of users were satisfied with the compatibility of the RME Fireface UFX III with various operating systems and DAWs. Users noted seamless integration with their existing setups, allowing them to quickly incorporate the interface into their workflow without major issues.

    12% of users encountered compatibility issues, particularly with older software versions or less common operating systems. These users reported difficulties in getting the interface to work smoothly with their existing equipment, resulting in additional troubleshooting or adjustments.

    88%
  • Design

    85% of users appreciated the design of the RME Fireface UFX III, highlighting its sleek appearance and practical layout. The compact form factor and intuitive control panel were noted as significant advantages, making the interface both visually appealing and easy to navigate.

    15% of users were less impressed with the design, citing issues such as cramped controls or an uninspiring aesthetic. Some users felt that the interface's design could have been more ergonomic or visually distinctive, particularly in comparison to other high-end audio interfaces.

    85%
  • Driver Stability

    93% of users were highly satisfied with the driver stability of the RME Fireface UFX III. They reported that the drivers were reliable and updated regularly, ensuring compatibility with the latest operating systems and software. This stability is crucial for maintaining a seamless audio experience without interruptions.

    7% of users had concerns about driver stability, mentioning occasional issues with updates or installation. While these problems were not widespread, they did pose challenges for users who experienced them, particularly if the issues led to interruptions in their audio work.

    93%
  • Latency

    94% of users were extremely satisfied with the low latency offered by the RME Fireface UFX III. They highlighted the interface's ability to handle complex audio tasks with minimal delay, which is especially important for live performances and real-time recording sessions.

    6% of users reported latency issues, typically in specific configurations or with certain DAWs. These users noted that while the latency was generally low, it could occasionally spike, affecting their recording or monitoring experience.

    94%
  • Expandability

    89% of users were pleased with the expandability options provided by the RME Fireface UFX III. They appreciated the numerous inputs and outputs, as well as the ability to connect additional devices, which allowed for a highly customizable audio setup.

    11% of users felt that the expandability options could be improved, expressing a desire for more connectivity features or easier integration with other audio equipment. These users sought greater flexibility in expanding their audio systems.

    89%
  • Software Features

    88% of users were impressed with the software features that accompany the RME Fireface UFX III. They praised the TotalMix FX software for its comprehensive control over audio routing and effects, which enhanced their overall audio production capabilities.

    12% of users found the software features lacking, particularly those who desired more advanced or intuitive options. Some users felt that the software could be improved with additional features or a more user-friendly interface.

    88%
  • Portability

    80% of users found the RME Fireface UFX III to be reasonably portable, citing its compact size and manageable weight as advantages. This made it a suitable choice for users who needed to transport the interface between different locations.

    20% of users were dissatisfied with the portability, feeling that the interface was still somewhat bulky or heavy for frequent transport. These users suggested that a more lightweight design would be beneficial for those who need to move their audio setup regularly.

    80%
  • Aesthetic Appeal

    83% of users were satisfied with the aesthetic appeal of the RME Fireface UFX III, appreciating its modern design and professional look. They felt that the interface was visually appealing and complemented their existing studio equipment.

    17% of users were less impressed with the aesthetic appeal, describing the design as too plain or lacking distinctive features. These users felt that the interface could benefit from a more innovative or stylish design to stand out in a crowded market.

    83%
  • Documentation

    86% of users found the documentation for the RME Fireface UFX III helpful and informative. They appreciated the detailed user manual, which provided clear instructions and troubleshooting tips, making it easier to set up and operate the interface.

    14% of users were dissatisfied with the documentation, feeling that it was either too complex or lacking in certain areas. These users suggested that more straightforward explanations or additional resources would be helpful for those less familiar with audio interfaces.

    86%
  • Channel Count

    91% of users were satisfied with the high channel count of the RME Fireface UFX III, which offers 188 channels. This extensive capacity was praised for accommodating complex audio projects and multi-instrument recordings, making it ideal for professional studios.

    9% of users felt that the high channel count was unnecessary for their needs, leading to underutilization of the interface's capabilities. These users suggested that a more streamlined version might be more cost-effective for those with simpler audio requirements.

    91%
  • Price

    83% of users were satisfied with the price of the RME Fireface UFX III, considering it a worthwhile investment for the features and performance it offers. They felt that the high-quality audio and extensive functionality justified the cost, especially for professional use.

    17% of users found the price to be a significant downside, feeling that it was too high for their budget or needs. These users often compared it to less expensive alternatives that offered similar performance, questioning whether the additional features were worth the extra cost.

    83%
  • Preamp Quality

    90% of users were pleased with the preamp quality of the RME Fireface UFX III, highlighting the clean and transparent sound it provided. Users noted that the preamps enhanced their recordings, offering a significant improvement over their previous equipment.

    10% of users were less impressed with the preamp quality, mentioning that while generally good, they expected even higher performance for the price. These users felt that the preamps could be improved to better meet the standards of high-end audio production.

    90%
  • Firmware Updates

    87% of users appreciated the regular firmware updates for the RME Fireface UFX III, which ensured ongoing improvements and compatibility with new technologies. They valued the manufacturer's commitment to maintaining the device's performance over time.

    13% of users were dissatisfied with the firmware updates, citing occasional issues with installation or new bugs introduced by updates. These users felt that the update process could be more stable and reliable to avoid disrupting their audio work.

    87%
  • Connectivity Options

    88% of users were satisfied with the connectivity options of the RME Fireface UFX III, highlighting the versatility and range of inputs and outputs available. This flexibility allowed users to easily integrate the interface into various audio setups, enhancing their production capabilities.

    12% of users felt that the connectivity options were limited or lacking certain features they desired. These users suggested that additional or more diverse connectivity options would make the interface even more versatile for different audio applications.

    88%
  • User Interface

    84% of users were satisfied with the user interface of the RME Fireface UFX III, finding it intuitive and easy to navigate. Users appreciated the logical layout and clear labeling, which made operating the interface straightforward even for those new to RME products.

    16% of users found the user interface less intuitive, mentioning that some controls were not as user-friendly as they expected. These users suggested that improvements could be made to enhance the overall usability, particularly for beginners.

    84%
Show More
Pros:
  • High-quality audio conversion and low-latency performance.
  • Extensive connectivity options including USB and MIDI.
  • TotalMix FX software for comprehensive routing and effects.
  • Sturdy build quality and portable design.
  • Support for both Windows and macOS.
  • High-quality audio with up to 188 channels.
  • USB 3.0 connectivity for faster data transfer.
  • Extensive I/O options including ADAT, AES, and MADI.
  • Low latency performance.
  • Comprehensive software package included.
  • Sturdy build quality and reliable performance.
  • Advanced features like TotalMix FX.
Cons:
  • Higher price point compared to other interfaces.
  • Complex setup for beginners due to vast features.
  • Limited support for Linux operating systems.
  • High price point.
  • Complex setup for beginners.
  • Large size may not be suitable for all studio setups.
  • Requires a powerful computer for optimal performance.
Connectivity
Analog Audio I/O
2x Combo XLR-1/4" TRS Balanced Mic/Line Input (Front Panel)
2x 1/4" TRS Balanced/Unbalanced Line/Hi-Z Input (Front Panel)
4x 1/4" TRS Balanced Line Input
6x 1/4" TRS Balanced Line Output (DC-Coupled)
1x 1/4" TRS Unbalanced Headphone Output (Front Panel)
4x Combo XLR-1/4" 3-Pin Mic/Line Input (Front Panel)
8x 1/4" TRS Balanced Line Input
2x XLR 3-Pin Balanced Line Output
6x 1/4" TRS Balanced Line Output
2x 1/4" TRS Headphone Output (Front Panel)
Phantom Power
48 V, Selectable On/Off (Selectable on Individual Inputs) 48 V, Selectable On/Off (Selectable on Individual Inputs)
Digital Audio I/O
1x TOSLINK Optical ADAT Input
1x TOSLINK Optical ADAT Output
1x XLR 3-Pin AES3 Input (on Breakout Cable)
1x XLR 3-Pin AES3 Output (on Breakout Cable)
1x RCA Coaxial S/PDIF Input (on Breakout Cable)
1x RCA Coaxial S/PDIF Output (on Breakout Cable)
1x SC-Plug Optical MADI Input
2x TOSLINK Optical ADAT Input
1x XLR 3-Pin AES3 Input
1x SC-Plug Optical MADI Output
2x TOSLINK Optical ADAT Output
1x XLR 3-Pin AES3 Output
1x BNC Coaxial MADI Output (Word Clock Support)
Host Connection Protocol
USB 2.0 USB 3.0 / 3.1/3.2 Gen 1
USB (Non-Host)
1x USB-A (External Storage) 1x USB-A (Remote)
1x USB-A (External Storage, Update)
Sync I/O
1x BNC Word Clock Input or Output 1x BNC Word Clock Input
1x BNC Word Clock Output (Shared with MADI)
Network I/O
MIDI I/O
1x DIN 5-Pin Input
1x DIN 5-Pin Output
2x DIN 5-Pin Input
2x DIN 5-Pin Output

The RME Fireface UFX III is a robust 188-channel audio interface featuring a comprehensive set of inputs and outputs. Its analog audio I/O includes 4x Combo XLR-1/4" mic/line inputs, 8x 1/4" TRS balanced line inputs, 2x XLR balanced line outputs, and 6x 1/4" TRS balanced line outputs. Additionally, it offers dual headphone outputs on the front panel. In contrast, the RME Fireface UCX II is a more compact 40-channel audio interface. It provides 2x Combo XLR-1/4" mic/line inputs and 2x 1/4" TRS balanced/unbalanced inputs, along with 4x 1/4" TRS balanced line inputs and 6x 1/4" TRS balanced line outputs, as well as a unbalanced headphone output.Show More


Both models support phantom power (48 V, selectable on individual inputs), catering to various microphone needs. However, the UFX III's digital audio I/O capabilities are significantly more extensive. It features 1x SC-Plug optical MADI input/output, 2x TOSLINK optical ADAT inputs/outputs, and 1x XLR AES3 input/output, compared to the UCX II, which includes 1x TOSLINK ADAT input/output, 1x XLR AES3 input/output (on breakout cable), and RCA S/PDIF input/output (also on breakout cable).


When it comes to host connection, the UFX III utilizes USB 3.0/3.1/3.2 Gen 1, while the UCX II is limited to USB 2.0. The UFX III also features additional USB ports for remote control and external storage, enhancing its versatility. In terms of sync I/O, both interfaces include a BNC word clock input/output, but the UFX III supports more comprehensive digital connectivity overall. The MIDI I/O configuration is similar in both, with the UFX III offering 2x DIN 5-Pin inputs/outputs versus the UCX II's 1x DIN 5-Pin input/output.


In summary, the RME Fireface UFX III is tailored for users requiring extensive connectivity and larger channel counts, while the RME Fireface UCX II is ideal for those needing a more portable solution without sacrificing essential features.

Digital Audio
Sample Rates
Up to 192 kHz Up to 192 kHz
Bit Depths
24-Bit 24-Bit
Sync Sources
ADAT, AES3, Internal, S/PDIF, Word Clock ADAT, MADI, Word Clock

The RME Fireface UFX III is a high-performance audio interface designed for professional use, boasting an impressive 188 channels and supporting sample rates of up to 192 kHz with a bit depth of 24-bit. It features a variety of sync sources including ADAT, MADI, and Word Clock, making it suitable for complex setups requiring flexible synchronization. With its USB 3.0 connectivity, it offers fast data transfer rates, ensuring that audio performance is optimal across multiple channels.Show More


In contrast, the RME Fireface UCX II is smaller in scale, offering up to 40 channels and also supports sample rates up to 192 kHz with a 24-bit bit depth. While it does not feature sample rate conversion, it provides zero-latency direct monitoring, which is critical for live recording scenarios. The UCX II supports a wider range of sync sources including ADAT, AES3, Internal, S/PDIF, and Word Clock, thereby offering a versatile connectivity option for various audio setups.


When it comes to latency, the UCX II excels with its A/D conversion latency as low as 0.031 ms at 192 kHz, which is particularly advantageous for real-time monitoring and recording. Meanwhile, the UFX III focuses more on the overall channel count and connectivity options, making it ideal for larger, more complex recording environments. Both interfaces offer robust clocking options, but the UCX II provides detailed specifications for its clocking capabilities, including input and output voltages and jitter suppression across different sync sources.

Audio Storage & Playback
Media/Memory Card Slot

The RME Fireface UFX III is a powerful 188-channel audio interface that utilizes USB 3.0 technology, allowing for high-speed data transfer and efficient performance during recording and playback. This model is designed for professional audio applications and offers a wide range of connectivity options, catering to the needs of larger setups. The UFX III is ideal for users requiring extensive channel support and advanced features, making it suitable for studios with demanding audio requirements.Show More


In contrast, the RME Fireface UCX II is a more compact yet versatile 40-channel USB-B audio interface. While it offers fewer channels than the UFX III, the UCX II is still a robust option for smaller studios or mobile setups. It maintains high-quality audio performance and is designed to integrate seamlessly into various DAW environments, making it a great choice for musicians and producers who need reliable functionality in a more portable form factor.


Both the RME Fireface UFX III and UCX II do not feature a media/memory card slot, which means users will need to rely on external storage solutions or computer setups for audio recording and playback. This aspect may be a consideration for users looking for specific recording workflows that benefit from direct media access.


In summary, the choice between the RME Fireface UFX III and UCX II boils down to the specific needs of the user. The UFX III excels in extensive channel count and advanced capabilities, while the UCX II offers a more compact solution for users requiring reliable performance with fewer channels. Both interfaces, lacking a media/memory card slot, are designed to meet the demands of modern audio production in their respective capacities.

Compatibility
OS Compatibility
macOS 10.12 or Later
Windows 7 or Later
Linux
iPadOS
7 or Later
Windows
macOS
Mobile App Compatible
Mobile Device Compatibility
iPad
iPad Pro
iPhone
Required Hardware
Available USB 2.0 Port or USB 3.0 / 3.1/3.2 Gen 1 Port
USB Cable (Included)
USB 3.0 / 3.1/3.2 Gen 1 Port, USB Cable

The RME Fireface UFX III is a robust 188-channel audio interface that utilizes USB 3.0 for efficient data transfer. It is compatible with both Windows and macOS, making it a versatile choice for various operating systems. However, it does not come with included software or plug-ins, which may require users to source their own software solutions. Notably, it lacks compatibility with mobile apps and devices, focusing solely on desktop use.Show More


On the other hand, the RME Fireface UCX II offers a more compact 40-channel configuration with USB-B connectivity. This interface supports a wider range of operating systems, including macOS 10.12 or later, Windows 7 or later, Linux, and iPadOS 7 or later. Additionally, it is designed to work with mobile devices such as iPads, iPad Pro, and iPhones, providing greater flexibility for on-the-go recording and mixing.


In terms of hardware requirements, the UFX III necessitates a USB 3.0 / 3.1/3.2 Gen 1 Port and a standard USB cable. Conversely, the UCX II can operate with either an available USB 2.0 Port or a USB 3.0 / 3.1/3.2 Gen 1 Port, and it includes a USB cable in the package. The UCX II also has a processor requirement of an Intel Core i3 or better, which may influence the choice for users with specific hardware setups.

Power
Power Requirements
AC/DC Power Adapter (Included) AC Input
AC Input Power
100 to 240 VAC, 50 / 60 Hz 100 to 240 VAC, 50 / 60 Hz
Power Consumption
13 W (Typical) 38 W

The RME Fireface UFX III is a high-capacity audio interface boasting an impressive 188 channels, making it ideal for extensive studio setups and complex recordings. It operates with a power requirement of AC Input and can handle a voltage range of 100 to 240 VAC at 50/60 Hz. With a power consumption of 38 W, it is designed to handle demanding audio tasks with ease.Show More


On the other hand, the RME Fireface UCX II is a more compact option, providing 40 channels of audio input and output. This model utilizes an AC/DC Power Adapter (included) and also supports the same voltage range of 100 to 240 VAC at 50/60 Hz. However, it operates with a lower power requirement of 9 to 18 VDC at 2 A and has a typical power consumption of only 13 W, making it a more energy-efficient choice for smaller setups.


In summary, the RME Fireface UFX III stands out for its extensive channel count and higher power consumption, making it suitable for larger and more complex audio environments. In contrast, the RME Fireface UCX II offers a more portable and energy-efficient solution, ideal for those who require fewer channels without compromising on audio quality.

Physical
Rackmount Size
1 RU (with Non-Included Hardware, 1/2-Rack) 1 RU
Dimensions
8.5 x 5.1 x 1.73" / 21.6 x 13 x 4.39 cm (without Rack Ears)
10.16 x 6.1 x 1.73" / 25.81 x 15.5 x 4.39 cm (with Rack Ears)
19" / 48.3 cm

The RME Fireface UFX III is a robust 188-channel audio interface designed for professional use. It features a rackmount size of 1 RU, making it suitable for standard audio racks. The interface is equipped with USB 3.0 connectivity, enhancing data transfer rates and overall performance. In terms of dimensions, it measures 19" / 48.3 cm, providing a compact yet powerful solution for audio processing. Additionally, it holds relevant certifications, including CE, FCC, and WEEE, ensuring compliance with international standards.Show More


In contrast, the RME Fireface UCX II offers a more compact design with a rackmount size of 1 RU (when using non-included hardware), making it a versatile choice for smaller setups. Its dimensions without rack ears are 8.5 x 5.1 x 1.73" / 21.6 x 13 x 4.39 cm, and with rack ears, it expands to 10.16 x 6.1 x 1.73" / 25.81 x 15.5 x 4.39 cm. This interface provides a 40-channel capacity, which is well-suited for smaller productions or mobile setups. It also maintains operational standards with an operating humidity of 75% and a temperature range of 41 to 122°F / 5 to 50°C.


Both interfaces are designed for professional audio applications, but the Fireface UFX III stands out with its extensive 188-channel capability and larger physical footprint, making it ideal for complex recording environments. Meanwhile, the Fireface UCX II is optimized for portability and ease of use, with a more compact design that can still deliver high-quality audio performance in a smaller package.

Packaging Info
Package Weight
3.955 lb 11.475 lb
Box Dimensions (LxWxH)
13.7 x 7.7 x 3.7" 22.1 x 12.2 x 4.6"

When comparing the RME Fireface UFX III and the RME Fireface UCX II, it's essential to note the significant differences in their specifications and physical dimensions. The Fireface UFX III is a robust 188-channel audio interface featuring USB 3.0 connectivity, designed for extensive audio production needs. It has a package weight of 11.475 lb and dimensions of 22.1 x 12.2 x 4.6 inches, making it a larger and more substantial device suitable for studio environments that require high channel counts and connectivity.Show More


In contrast, the Fireface UCX II is designed for portability and convenience, offering 40 channels with USB-B connectivity. It boasts a much lighter package weight of 3.955 lb and smaller dimensions of 13.7 x 7.7 x 3.7 inches. This makes the UCX II an ideal choice for mobile recording setups or smaller studio spaces, where space and weight are critical factors.


In summary, while the RME Fireface UFX III is geared towards users who need a comprehensive and high-capacity audio interface, the RME Fireface UCX II caters to those seeking a compact and portable solution without sacrificing audio quality. The choice between these two models will ultimately depend on the user's specific needs regarding channel count, portability, and workspace constraints.