| Fireface UCX | Fireface UC/400 | |
|---|---|---|
| DSP hardware effects | yes | - |
| Support for RME Remotes | yes | - |
| AD/DA Conversion | New 2011 design | |
| Low latency AD/DA Conversion | yes | |
| AutoSet for overload protection | yes | |
| Bus-powered operation | FirWire mode only | Fireface 400: yes Fireface UC: no |
| Fireface UCX | Fireface UFX | |
|---|---|---|
| Inputs | 18 | 30 |
| Outputs | 18 | 30 |
| Analog I/Os | 8 | 12 |
| Advanced Parallel Conversion | - | 4 x |
| AES/EBU I/O | - | 1 x |
| SPDIF I/O |
1 coaxial + 1 optical (opt. = ADAT I/O) |
1 optical (2nd ADAT I/O) |
| ADAT I/O | 1 x | 2 x |
| Mic Preamps (digitally controlled) | 2 x | 4 x |
| Word Clock I/O (BNC) | yes | yes |
| Phones Outputs (dedicated) | 1 x | 2 x |
| High Resolution Color Display | - | yes |
| MIDI I/O | 2 x | 2 x |
| Internal DSP hardware effects | yes | yes |
| AutoSet for Mic/Inst. Preamps | 4 x | 4 x |
| RME Remote Support | yes | yes |
| Direct USB Recording | - | yes |
| Size | 1/2 19 inch | 19 inch |
| All TotalMix FX features at up to 192 kHz | yes | yes |
| SMUX (up to 192 kHz) | yes | yes |
| Complete Stand Alone Operation with Setup Recall | yes | yes |
| USB & FireWire support (X-Core) | yes | yes |