RME's Babyface Pro FS is a portable 12-in/12-out USB 2.0 interface using femtosecond-clock SteadyClock FS and dual-stage headphone amps. The rear panel carries two XLR mic inputs and two balanced XLR line outputs, with two 1/4-inch TRS inputs for line/Hi-Z sources on the side. Parallel 1/4-inch and 3.5-mm headphone outputs share the same discrete driver stage. An optical TOSLINK I/O pair provides ADAT (up to 8ch with SMUX) or S/PDIF, and host connectivity is a full-size USB Type-B (USB 2.0) socket. MIDI I/O is routed through an included proprietary multi-pin breakout cable to two 5-pin DIN jacks.
RME’s bus-powered USB 2.0 interface with XLR mic ins, balanced XLR outs, optical ADAT I/O, dual parallel headphones, and breakout MIDI.
Device Information
- Manufacturer
- RME
- Release Year
- 2019
- Model Number
- Babyface Pro FS
- Category
- Audio Interface
Source: manufacturer product page · Last updated: · How we verify port data →
Available Ports
| Connector | Quantity | Power (PD) | Capabilities | Label | Notes |
|---|---|---|---|---|---|
| XLR (3-pin Balanced Audio) | 2 | — | — | Mic Inputs 1 & 2 — XLR (rear) | Balanced XLR microphone / line inputs with 48V phantom (switchable per pair). |
| XLR (3-pin Balanced Audio) | 2 | — | — | Line Outputs 1 & 2 — XLR (rear, balanced) | Male XLR balanced line outputs to drive active studio monitors. |
| 6.35mm TRS (1/4 inch Audio) | 2 | — | — | Inputs 3 & 4 — Line/Instrument (side) | Unbalanced 1/4" jacks for line-level gear or Hi-Z instruments (guitar/bass). |
| 6.35mm TRS (1/4 inch Audio) | 1 | — | — | Headphones 1/4" (side) | 1/4" TRS headphone output on dedicated driver stage optimised for higher-impedance cans. |
| 3.5mm TRS (Stereo Audio) | 1 | — | — | Headphones 3.5mm (side) | Parallel 3.5mm headphone output on independent driver stage tuned for IEM / low-impedance loads. |
| Optical TOSLINK (S/PDIF) | 2 | — | — | Optical In / Out (ADAT or S/PDIF) | TOSLINK pair — each jack switchable in software between ADAT (8ch @ 48kHz, SMUX for higher rates) and stereo S/PDIF. |
| USB Type-B (USB 2.0) | 1 | — | — | USB (side, to host) | Full-size USB Type-B 2.0 socket. Bus-powered; optional external PSU for standalone use. |
| Kensington Security Slot | 1 | — | — | K-Slot (side) | Standard Kensington lock slot for theft protection. |
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Notes & Compatibility
Host port is USB Type-B (USB 2.0) on the side — despite newer product bundles including a USB-C cable, the device-side connector remains USB Type-B until the 2024 MkII refresh. MIDI runs through a proprietary 6-pin mini-DIN breakout cable that provides 5-pin DIN MIDI In/Out (the mini-DIN isn’t listed in the port table). An optional 12V DC barrel input for standalone or non-bus-powered use isn’t listed either.
