RME's Fireface 800 revolutionized the world of FireWire audio interfaces. Now
the revolution continues: The Fireface 400 is not just the little brother of the
Fireface 800 - it is a completely newly designed device. It is the only device
in its class with active jitter suppression, stand-alone functionality, complete
controllability from the front panel, highly flexible I/Os in professional
quality, and an unsurpassed 648-channel matrix router - at sample rates up to
As usual, RME offer a host of sophisticated features and characteristics.
- Two digitally controlled Mic Preamps in high-end quality
- Two balanced universal inputs for line and instrument signals
- SteadyClock for maximum jitter suppression and clock refresh
- Simple stand-alone operation with rotary encoder and front panel display
- 54 Level Meter Peak/RMS, hardware-calculated
- Full mobility by Bus Power support
- DIGICheck, RME's unique meter and analysis tool
- TotalMix: 648-channel mixer with 42-bit internal resolution
The DSP-based TotalMix mixer allows fully independent routing and mixing of
all 18 input and output channels to all 18 physical outputs. Up to 9 totally
independent stereo sub-mixes simply mean unrivalled monitoring facilities.
Copy/paste of routings, ganging and group-based operation of faders, and the
extraordinary Matrix window are just some of the mixer's unique features. The
mixer can be completely MIDI controlled, even in stand-alone operation.
Furthermore the DSP hardware calculates RMS and Peak levels for all 54 audio
channels, without causing any significant CPU load.
A word clock input and output (BNC) plus two MIDI I/Os (breakout cable, 5-pin
DIN) complete the analog/digital feature list and turn the Fireface 400 into an
entire audio system of the highest quality.
The Fireface 400 excells as portable all-in-one solution when it comes to
power supply. The included switching power supply accepts voltages from 100 to
240 V, thus can be operated all over the world. A rear panel switch enables Bus
Powered operation, taking the power directly from the FireWire connector. To
avoid potential problems, both the unit's internal power supply and the
protective circuits at the FireWire port were specially designed and thoroughly
Thanks to an internal flash memory, all settings including TotalMix are
recalled during boot. The device can thus be configured and used as a
stand-alone device, without being connected to a computer, e.g. as a submixer,
A/D and D/A-converter, headphone mixer, format converter, instrument or
microphone pre-amplifier, monitoring mixer and much more.
The Fireface 400 is equipped with SteadyClock™, RME's unique sync and clock
technology. With this, the device becomes a sync reference for the whole studio.
SteadyClock refreshes clock signals, removes jitter, and takes permanent care of
optimal conversion quality, thus guarantees a sensational sound quality,
completely independent from the reference clock's quality.
SteadyClock allows the unit to control the sample rate freely on its own. The
Settings dialog includes a direct choice of the video and audio world's most
often used sample rates. Additionally, two faders can be used to set the sample
rate freely and in real-time, within the range of +/- 4% and +/- 0.4%.
Fireface 400 uses RME's own FireWire techology, heavily optimized for audio
purposes (RME is the only manufacturer not to use a third party FireWire audio
technology). Minimum overhead, special hardware adaptations, and a new
low-latency buffer concept allow a performance and compatibility considered
impossible for FireWire audio until now. This includes changing latency in
mid-operation, latencies down to one ms, or an immediate reaction to changes of
the sample rate. Further optimizations and additional features can be added at
any time by Flash Updates.
Of course the Fireface 400 offers a second FireWire port for hub
functionality. Several devices can be connected to one FireWire interface and
operated in parallel. The renowned Fireface 800 shares the same driver, allowing
- Input AD: 6 x 1/4" TRS (4 x LIne, 2 x Line/Instrument), 2 x XLR/TRS Combo
connector (2 x Mic/Line) all servo-balanced.
- Output DA: 6 x 1/4" TRS, servo-balanced, DC-coupled signal path. 1 x 1/4"
- Input Digital: 1 x ADAT optical or SPDIF optical, SPDIF coaxial (AES/EBU
- Output Digital: 1 x ADAT optical or SPDIF optical, SPDIF coaxial (AES/EBU
- MIDI: 2 x MIDI I/O via breakoutcable (4 x 5-pin DIN jacks), for 32
channels low jitter hi-speed MIDI
- Dynamic range AD: 109 dB RMS unweighted, 112 dBA
- THD AD: < -100 dB (< 0.001 %)
- THD+N AD: < -98 dB (< 0.0012 %)
- Crosstalk AD: > 100 dB
- Dynamic range DA: 110 dB RMS unweighted, 112 dBA (unmuted)
- THD DA: < -100 dB (< 0.001 %)
- THD+N DA: < -97 dB (< 0.0014 %)
- Crosstalk DA: > 100 dB
- Input/Output level for 0 dBFS @ Hi Gain: +19 dBu
- Input/Output level for 0 dBFS @ +4 dBu: +13 dBu
- Input/Output level for 0 dBFS @ -10 dBV: +2 dBV
- Sample rate internally: 32, 44.1, 48, 64, 88.2 kHz, 96 kHz, 128, 176.4,
- Sample rate externally: 28 kHz - 200 kHz
- Frequency response AD/DA, -0.5 dB: 5 Hz - 21 kHz (sf 44.1 kHz)
- Frequency response AD/DA, -0.5 dB: < 5 Hz - 43.3 kHz (sf 96 kHz)
- Frequency response AD/DA, -1 dB: < 5 Hz - 70 kHz (sf 192 kHz)
- Windows 2000 SP4, Windows XP/XP64, Windows 7: Full ASIO multi-client operation of WDM, MME (not XP64), GSIF 2.0 and ASIO 2.0. WDM (DirectSound) with stereo and multi-channel support. Full hot-plugging. Up to 3 units operational.
- Mac OS X (10.3. or up) and x86: Core Audio, Core MIDI. Since 10.4 (Tiger) up to 3 units operational.