The RME Babyface Pro FS 24-Channel USB-B Audio/MIDI Interface is renowned for its high-quality audio performance and extensive connectivity options. This device offers up to 24 channels of audio, with 12 input and 12 output channels, providing ample flexibility for both studio and live applications. It features high-quality AD/DA converters and a comprehensive set of analog and digital I/O, including XLR, TRS, and ADAT ports. The Babyface Pro FS is designed for precision, boasting ultra-low latency and a high signal-to-noise ratio, making it ideal for professional sound engineers and musicians seeking uncompromised audio fidelity.
In contrast, the Solid State Logic SSL 2+ USB-C Audio Interface is a more compact option, designed with simplicity and ease of use in mind. It offers 2 input and 4 output channels, which makes it more suitable for small recording setups or mobile use. The SSL 2+ features high-quality preamps based on SSL's renowned analog technology, ensuring excellent sound quality. The device also includes a Legacy 4K button, which adds a subtle analog character to recordings, reminiscent of the classic SSL 4000 series consoles. Its USB-C connectivity ensures fast data transfer and compatibility with modern devices, making it a convenient choice for users with contemporary equipment.
Both interfaces are portable and built with durability in mind, but the RME Babyface Pro FS is tailored for more demanding professional environments with its extensive channel count and advanced features. The Solid State Logic SSL 2+, on the other hand, is ideal for users who prioritize ease of use and affordability while still desiring high-quality sound. Each of these interfaces caters to different needs within the audio production realm, with the Babyface Pro FS offering greater flexibility and the SSL 2+ providing straightforward, high-quality recording capabilities.
In this article, we will provide a comprehensive comparison of the RME Babyface Pro FS 24-Channel USB-B Audio/MIDI Interface and the Solid State Logic SSL 2+ USB-C Audio Interface. We will thoroughly examine all their specifications, as well as review their advantages and disadvantages. This detailed analysis aims to assist you in selecting the best audio interface for your needs.
User Rating Based on Analysis of Reviews | |
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Key Specs | |
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Channels of I/O | |
Analog: 2 Inputs / 4 Outputs at 192 kHz |
Analog: 4 Input / 4 Output Digital: 12 Input / 12 Output |
Maximum Sampling Rate | |
192 kHz / 24-Bit | 192 kHz / 24-Bit |
Number of Microphone Inputs | |
2 Preamps | 2 Preamps |
Analog Audio I/O | |
2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 2x 1/4" TRS Balanced Monitor Output 4x RCA TS Unbalanced Line Output 2x 1/4" TRS Unbalanced Headphone Output |
2x XLR 3-Pin Balanced Mic/Line Input 2x 1/4" TS Unbalanced Line/Hi-Z Input 2x XLR 3-Pin Balanced Monitor Output 1x 1/4" TRS Unbalanced Headphone Output 1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output |
Host Connection | |
1x USB-C | 1x USB-B |
OS Compatibility | |
macOS 10.11 macOS 10.12 macOS 10.13 macOS 10.14 macOS 10.15 Windows 8.1 Windows 10 |
macOS Windows |
Power Requirements | |
USB Bus Power | AC/DC Power Adapter (Not Included), USB Bus Power |
The RME Babyface Pro FS offers a comprehensive 24-channel USB-B audio interface with a robust I/O configuration, featuring 4 analog inputs and 4 outputs, alongside 12 digital inputs and 12 outputs. In contrast, the Solid State Logic SSL 2+ presents a simpler setup with 2 analog inputs and 4 outputs. Both interfaces support a maximum sampling rate of 192 kHz and 24-bit depth, but the RME's wider channel count makes it more suitable for larger projects.Show More
When it comes to microphone inputs, both interfaces are equipped with 2 preamps. However, the RME Babyface Pro FS features two XLR 3-Pin Balanced Mic/Line inputs and two 1/4" TS Unbalanced Line/Hi-Z inputs, providing more versatility in signal routing. The SSL 2+, on the other hand, utilizes combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z inputs, which offers flexibility but limits the number of simultaneous inputs.
In terms of audio connectivity, the RME Babyface Pro FS includes 2 XLR 3-Pin Balanced Monitor Outputs, a 1/4" TRS Unbalanced Headphone Output, and a 1/8" TRS Unbalanced Headphone Output, while the SSL 2+ provides 2 1/4" TRS Balanced Monitor Outputs and 2 1/4" TRS Unbalanced Headphone Outputs. The RME interface also features optical ADAT/S/PDIF input and output, enhancing its digital connectivity options.
Regarding host connection, the RME Babyface Pro FS utilizes a USB-B connection, whereas the SSL 2+ offers a more modern USB-C interface, which is compatible with a range of devices. Both units are compatible with macOS and Windows operating systems, although the SSL 2+ specifically supports a wider range of macOS versions. Lastly, while the RME interface requires an AC/DC power adapter (not included) or can operate via USB bus power, the SSL 2+ is solely powered through USB bus power, making it more portable.
General | |
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Channels of I/O | |
Analog: 2 Inputs / 4 Outputs at 192 kHz |
Analog: 4 Input / 4 Output Digital: 12 Input / 12 Output |
Maximum Sampling Rate | |
192 kHz / 24-Bit | 192 kHz / 24-Bit |
Number of Microphone Inputs | |
2 Preamps | 2 Preamps |
Expansion Slots | |
The RME Babyface Pro FS is a versatile 24-channel USB-B audio/MIDI interface that offers a comprehensive I/O configuration, featuring 4 analog inputs and 4 analog outputs, along with 12 digital inputs and 12 digital outputs. This extensive channel setup makes it suitable for complex recording scenarios where multiple sources need to be managed simultaneously. In contrast, the Solid State Logic SSL 2+ is more streamlined, providing 2 analog inputs and 4 outputs, which may appeal to users looking for a simpler solution for home studio setups.Show More
Both interfaces boast a maximum sampling rate of 192 kHz and support 24-bit depth, ensuring high-quality audio capture and playback. This makes them equally capable in terms of audio fidelity. Each interface also features 2 microphone preamps, allowing users to connect microphones directly for recording. However, the RME Babyface Pro FS’s greater number of input and output channels gives it an edge in more demanding audio environments.
Neither interface includes built-in DSP processing or expansion slots, keeping the design focused on straightforward audio I/O capabilities. The SSL 2+ does offer an input level adjustment with 2 knobs, providing users with some control over their input signals directly on the device. This feature can be particularly useful for adjusting levels on-the-fly during recording sessions, which is something the RME Babyface Pro FS does not emphasize.
In summary, the choice between the RME Babyface Pro FS and the Solid State Logic SSL 2+ largely depends on the user's specific needs. The RME interface is ideal for more complex setups requiring multiple channels, while the SSL 2+ is a solid choice for users seeking a simpler, yet high-quality audio interface with intuitive controls.
Signal Processing | |
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Gain/Trim Range | |
Mic/Line/Hi-Z Inputs: Up to 62 dB |
Mic/Line/Hi-Z Inputs: -11 dB to +65 dB |
The RME Babyface Pro FS offers a gain/trim range for its Mic/Line/Hi-Z inputs from -11 dB to +65 dB, providing a wide operational range that allows for precise control over input levels. This feature is particularly beneficial for users who require versatility in handling various audio sources, ensuring that both quiet and loud signals can be accommodated effectively.Show More
In contrast, the Solid State Logic SSL 2+ has a slightly narrower gain/trim range for its Mic/Line/Hi-Z inputs, offering up to 62 dB. This still provides ample gain for most applications but may limit certain scenarios where higher gain settings are necessary. Additionally, the SSL 2+ does not incorporate a pad feature, which might be a drawback for users who often deal with high-output sources.
Moreover, the RME Babyface Pro FS excels in providing advanced features such as high-pass filters and solo/mute functions, enhancing its usability in professional audio setups. On the other hand, the Solid State Logic SSL 2+ lacks these features, which could impact workflow efficiency for users who need quick adjustments during recording or mixing sessions.
Connectivity | |
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Analog Audio I/O | |
2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Input 2x 1/4" TRS Balanced Monitor Output 4x RCA TS Unbalanced Line Output 2x 1/4" TRS Unbalanced Headphone Output |
2x XLR 3-Pin Balanced Mic/Line Input 2x 1/4" TS Unbalanced Line/Hi-Z Input 2x XLR 3-Pin Balanced Monitor Output 1x 1/4" TRS Unbalanced Headphone Output 1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output |
Digital Audio I/O | |
1x TOSLINK Optical ADAT / S/PDIF Input 1x TOSLINK Optical ADAT / S/PDIF Output |
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Host Connection | |
1x USB-C | 1x USB-B |
Host Connection Protocol | |
USB 2.0 | USB 3.0 / 3.1/3.2 Gen 1 |
USB (Non-Host) | |
Sync I/O | |
Network I/O | |
MIDI I/O | |
1x DIN 5-Pin Input 1x DIN 5-Pin Output |
The RME Babyface Pro FS offers a comprehensive audio interface solution with a total of 24 channels via USB-B. It features 2x XLR 3-Pin Balanced Mic/Line Inputs and 2x 1/4" TS Unbalanced Line/Hi-Z Inputs, allowing for versatile recording options. Additionally, it includes 2x XLR 3-Pin Balanced Monitor Outputs and two headphone outputs, one being a 1/4" TRS and the other a 1/8" TRS. The digital audio I/O consists of a TOSLINK Optical ADAT/S/PDIF Input and Output, making it suitable for complex setups requiring digital connectivity.Show More
In contrast, the Solid State Logic SSL 2+ provides a robust set of features with its 2x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line/Hi-Z Inputs, making it compatible with various input types. It also includes 2x 1/4" TRS Balanced Monitor Outputs and 4x RCA TS Unbalanced Line Outputs, catering to different monitoring and output needs. Notably, the SSL 2+ includes 48 V Phantom Power which can be selected on individual inputs, enhancing its versatility for condenser microphones. Furthermore, it has 2x 1/4" TRS Unbalanced Headphone Outputs and incorporates MIDI I/O with 1x DIN 5-Pin Input and 1x DIN 5-Pin Output, which the RME Babyface lacks.
When it comes to host connections, the RME Babyface Pro FS utilizes a USB 3.0 / 3.1/3.2 Gen 1 protocol, while the SSL 2+ operates on a USB 2.0 connection via USB-C. This difference may affect data transfer rates and compatibility with different systems. However, both devices do not support USB (Non-Host), Sync I/O, or Network I/O, focusing primarily on audio and MIDI functionalities.
Performance | |
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Frequency Response | |
Line, Hi-Z Inputs: 20 Hz to 20 kHz ±0.05 dB Mic Inputs: 20 Hz to 20 kHz ±0.1 dB Line, Headphone, Monitor Outputs: 20 Hz to 20 kHz ±0.05 dB |
Mic, Line Inputs: 18 Hz to 20.8 kHz -0.1 dB (at 44.1 kHz) 7 Hz to 45.8 kHz -0.5 dB (at 96 kHz) 5 Hz to 88 kHz (at 192 kHz) Line, Hi-Z Inputs: 5 Hz to 20.8 kHz -0.1 dB (at 44.1 kHz) 3 Hz to 45.8 kHz -0.5 dB (at 96 kHz) 2 Hz to 92 kHz -1 dB (at 192 kHz) Line Outputs: 0 Hz to 20.8 kHz -0.5 dB (at 44.1 kHz) 0 Hz to 45 kHz -0.5 dB (at 96 kHz) 0 Hz to 89 kHz -1 dB (at 192 kHz) |
Maximum Input Level | |
Mic Inputs: +5.5 dBu Line Inputs: +24 dBu Hi-Z Inputs: +15 dBu |
Mic Inputs: +8 dBu (Min Gain) +19 dBu (with Pad) -57 dBu (Max Gain) -46 dBu (with Pad) Line/Hi-Z Inputs: +13 dBu (+4 dBu) -5 dBu (-10 dBV) |
Impedance | |
Mic Inputs: 1.2 Kilohms Line Inputs: 10 Kilohms Hi-Z Inputs: 1 Megohm Monitor Outputs: 1 Ohm RCA Line Outputs: < 1 Ohm Headphone Outputs: 10 Ohms |
Mic/Line Inputs: 2 to 5.2 Kilohms (Balanced) 1 to 2.6 Kilohms (Unbalanced) Line/Hi-Z Inputs: 1 Megohm Line Outputs: 300 Ohms (Balanced) 150 Ohms (Unbalanced) Headphone Outputs: 10 Ohms (Unbalanced) 0.1 Ohm (Unbalanced) |
Dynamic Range | |
Mic/Line/Hi-Z Inputs: 110.5 dB (A-Weighted) Monitor Outputs: 112 dB (A-Weighted) RCA Line Outputs: 110 dB Headphone Outputs: 111 dB (A-Weighted) |
D/A Converters: 115 dB RMS 118 dBA |
THD+N | |
Mic/Line/Hi-Z Inputs: < 0.005% (at -1 dBFS) Monitor Outputs: < 0.002% (at -1 dBFS) RCA Line Outputs: < 0.0025% (at -1 dBFS) Headphone Outputs: < 0.002% (at -1 dBFS) |
Mic/Line Inputs: < -108 dB / < 0.00035% < -100 dB / < 0.001% Line Outputs: < -102 dB / 0.0008% |
The RME Babyface Pro FS and the Solid State Logic SSL 2+ are both high-quality audio interfaces, but they differ significantly in their specifications. The RME Babyface Pro FS boasts an impressive frequency response across various input types, with mic and line inputs ranging from 18 Hz to 20.8 kHz at -0.1 dB (44.1 kHz) and extending to 5 Hz to 88 kHz at -1 dB (192 kHz). In comparison, the SSL 2+ offers a more limited frequency response of 20 Hz to 20 kHz ±0.1 dB for mic inputs and ±0.05 dB for line and Hi-Z inputs, which may not cater to the same wide range of audio fidelity as the RME.Show More
When it comes to maximum input levels, the RME Babyface Pro FS allows for higher input levels on mic inputs, reaching up to +19 dBu with pad, while the SSL 2+ maxes out at +5.5 dBu. The line inputs on the RME can handle +13 dBu, compared to the SSL's +24 dBu. This indicates that the RME is designed for more dynamic range handling in lower-level signals, while the SSL caters better to higher level sources. Additionally, the RME features a headphone output power of 90 mW into 1000 Ohms, while the SSL 2+ provides a maximum of 10 dBu for headphone outputs, reflecting a more robust output capability in the RME.
The dynamic range of the Babyface Pro FS is also superior, with D/A converters providing a dynamic range of 115 dB RMS and an SNR of 113.7 dB RMS for mic/line inputs. In contrast, the SSL 2+ offers a dynamic range of 110.5 dB across its mic, line, and Hi-Z inputs. This difference indicates that the RME interface may deliver a clearer and more detailed audio signal in demanding recording situations.
Regarding total harmonic distortion (THD), the RME Babyface Pro FS achieves an impressive level of -112 dB / 0.00024% on line/mic inputs, while the SSL 2+ has a THD+N rating of <0.005% for mic/line/Hi-Z inputs, which is significantly higher in distortion. The RME's THD+N is also notably lower than that of the SSL, making it a better option for professional-grade recordings where purity of sound is paramount.
In summary, while both the RME Babyface Pro FS and Solid State Logic SSL 2+ are excellent audio interfaces, the RME offers superior specifications in frequency response, input levels, dynamic range, and THD performance, making it a more suitable choice for professional audio applications.
Digital Audio | |
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Sample Rates | |
Up to 192 kHz | Up to 200 kHz |
Bit Depths | |
Up to 24-Bit | Up to 24-Bit |
Sync Sources | |
Internal | ADAT |
The RME Babyface Pro FS offers impressive specifications with a maximum sample rate of up to 200 kHz, which allows for higher fidelity audio recordings and playback. In comparison, the Solid State Logic SSL 2+ supports a maximum sample rate of up to 192 kHz, slightly lower than that of the RME interface. Both devices support a bit depth of up to 24-bit, ensuring high-quality audio reproduction.Show More
In terms of synchronization, the RME Babyface Pro FS utilizes ADAT as its sync source, providing flexibility for integrating external digital devices. Conversely, the Solid State Logic SSL 2+ relies on an internal sync source, which may limit its connectivity options in some setups. This distinction can affect how each interface is integrated into larger audio systems.
Latency performance is another critical aspect, with the Solid State Logic SSL 2+ achieving an impressive latency of less than 1 ms at 48 kHz for input to output, making it suitable for real-time monitoring and recording. The RME Babyface Pro FS does not specify its latency performance, but RME products are generally known for low-latency operation. However, without specific metrics, the SSL 2+ may have the edge for users prioritizing real-time audio processing.
Audio Storage & Playback | |
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Memory Card Slot | |
The RME Babyface Pro FS and the Solid State Logic SSL 2+ are both high-quality audio interfaces designed to meet the needs of professional musicians and audio engineers. In terms of connectivity, both interfaces feature USB connections, with the Babyface Pro FS offering USB-B and the SSL 2+ utilizing USB-C. This allows for easy integration with modern computers and devices, ensuring low-latency performance for recording and playback.Show More
When it comes to audio quality, the RME Babyface Pro FS boasts a remarkable 24-channel capability, making it ideal for complex recording scenarios. It is well-regarded for its pristine audio conversion and low noise performance. In contrast, the Solid State Logic SSL 2+ offers a more straightforward 2-in/2-out configuration, which is perfect for simpler setups while still providing high-quality audio with SSL's renowned sound signature.
Both interfaces lack a memory card slot, which may be a consideration for users who prefer onboard recording capabilities. However, they compensate for this by offering robust software bundles and compatibility with various digital audio workstations (DAWs). The Babyface Pro FS is known for its extensive routing capabilities and mixer functionality, while the SSL 2+ emphasizes a user-friendly interface designed for quick access to essential features.
In conclusion, the choice between the RME Babyface Pro FS and the Solid State Logic SSL 2+ ultimately depends on the user's specific needs. For those requiring a versatile, multi-channel interface with advanced features, the Babyface Pro FS is the superior option. Conversely, the SSL 2+ stands out for its simplicity and high sound quality, making it an excellent choice for smaller projects or home studios.
Compatibility | |
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OS Compatibility | |
macOS 10.11 macOS 10.12 macOS 10.13 macOS 10.14 macOS 10.15 Windows 8.1 Windows 10 |
macOS Windows |
The RME Babyface Pro FS is a versatile 24-channel USB-B audio/MIDI interface that is compatible with both macOS and Windows, making it suitable for a wide range of users. However, it does not come with any included software or mobile app compatibility, which may be a consideration for those looking for an all-in-one solution. Its focus on professional audio quality and functionality makes it a preferred choice for serious musicians and audio engineers.Show More
In contrast, the Solid State Logic SSL 2+ USB-C audio interface also supports macOS (versions 10.11 through 10.15) and Windows (versions 8.1 and 10). This model requires an available USB 2.0 port and includes a USB cable for easy connectivity. However, it requires an internet connection for registration and to download software/drivers, which could be a drawback for users without reliable internet access. The SSL 2+ is designed to provide high-quality audio processing, appealing to both home studio enthusiasts and professional users.
Power | |
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Power Requirements | |
USB Bus Power | AC/DC Power Adapter (Not Included), USB Bus Power |
The RME Babyface Pro FS is a 24-channel USB-B Audio/MIDI Interface that offers versatile power options, functioning on both AC/DC power adapter (not included) and USB bus power. This flexibility allows users to choose their power source based on their setup and portability needs. Its power consumption ranges from 2.8 W (Idle) to 5.4 W (Maximum), making it efficient for various usage scenarios.Show More
In contrast, the Solid State Logic SSL 2+ is designed solely for USB bus power, which simplifies the power setup but limits its versatility in environments where an external power source might be preferred. This design ensures easy connectivity and hassle-free operation, particularly when working in mobile or compact studio setups.
Overall, while both interfaces are geared towards providing high-quality audio performance, the RME Babyface Pro FS offers more flexibility in power requirements, accommodating different user preferences and situations. The Solid State Logic SSL 2+, while simpler in its power needs, caters to users who prioritize a straightforward, USB-powered interface without the option for external power sources.
Physical | |
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Anti-Theft Features | |
Kensington Security Slot | Kensington Security Slot |
Operating Temperature | |
33 to 104°F / 1 to 40°C | 41 to 122°F / 5 to 50°C |
Dimensions | |
9.2 x 6.2 x 2.7" / 23.4 x 15.7 x 6.9 cm | 7.13 x 4.25 x 1.38" / 18.11 x 10.79 x 3.51 cm |
Weight | |
2.0 lb / 0.9 kg | 1.5 lb / 680.0 g |
When comparing the RME Babyface Pro FS and the Solid State Logic SSL 2+, both devices feature Kensington Security Slots for anti-theft protection. This makes them suitable for mobile setups where security can be a concern.Show More
In terms of operating temperature, the RME Babyface Pro FS supports a range from 41 to 122°F (5 to 50°C), while the SSL 2+ operates within a slightly narrower range of 33 to 104°F (1 to 40°C). This indicates that the RME interface can function in more extreme heat conditions.
Regarding dimensions, the RME Babyface Pro FS measures 7.13 x 4.25 x 1.38 inches (18.11 x 10.79 x 3.51 cm), making it more compact and portable compared to the SSL 2+, which is larger at 9.2 x 6.2 x 2.7 inches (23.4 x 15.7 x 6.9 cm). This compactness can be an advantage for users with limited space.
In terms of weight, the RME Babyface Pro FS is lighter at 1.5 lb (680 g), while the SSL 2+ weighs 2.0 lb (0.9 kg). The lighter weight of the RME unit enhances its portability, making it easier to transport for on-the-go recording.
Finally, for operating humidity, the RME Babyface Pro FS is recommended to operate at 75%, while the SSL 2+ does not specify a humidity rating. This could imply that the RME is better suited for environments where humidity levels are a concern.
Packaging Info | |
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Package Weight | |
2.61 lb | 3.73 lb |
Box Dimensions (LxWxH) | |
10.9 x 7.9 x 4.1" | 11.6 x 6.3 x 3.3" |
The RME Babyface Pro FS and the Solid State Logic SSL 2+ are both high-quality audio interfaces designed for professional audio recording and production. The RME Babyface Pro FS has a package weight of 3.73 lb, making it slightly heavier compared to the SSL 2+, which weighs 2.61 lb. This weight difference may influence portability, with the SSL 2+ being more convenient for mobile setups.Show More
In terms of dimensions, the RME Babyface Pro FS measures 11.6 x 6.3 x 3.3 inches, while the SSL 2+ has dimensions of 10.9 x 7.9 x 4.1 inches. The larger footprint of the RME may require more space on a desk or in a studio setup, but it also indicates potentially more robust features. The SSL 2+, being slightly smaller, may be more suitable for compact workspaces.
Both interfaces are designed to cater to different user needs and preferences. The RME Babyface Pro FS, with its enhanced weight and dimensions, suggests a focus on providing an extensive feature set and superior audio quality, while the Solid State Logic SSL 2+ offers a lighter and more compact alternative, ideal for those who prioritize portability without sacrificing sound quality.
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