RME DIGIFACE USB Audio Interfaces

USB Audio Interfaces

RME DIGIFACE USB is an extremely compact and portable digital audio interface with 4 optical ADAT/SPDIF I/O and a high-quality analog line/phono output via a 6.3mm TRS jack. Continuing the legacy of RME's famous HDSP Digiface, a triple ADAT I/O interface with phono and PCI interface, the RME DIGIFACE USB simplifies connection with USB 2, requires no external power supply, and also adds another optical I/O, resulting in 32 input and output channels each when using optical ADAT.
The analog output accommodates channels 33/34 and can be used freely thanks to TotalMix FX, RME's routing and monitoring solution that knows almost no routing and mixing limits (the Digiface USB does not include FX).
Every single optical port can use ADAT (up to 8 channels) or SPDIF (stereo). While the inputs automatically adapt to the received signal format, the outputs can be individually switched between ADAT and SPDIF operation. SMUX and SMUX4 are supported. Therefore, at 192 kHz, 8 channels are possible via 4 x SPDIF or ADAT on both inputs and outputs.
Its small size, light weight, and bus-powered operation make the RME DIGIFACE USB extremely versatile and useful.

Specifications

Optical ADAT/SPDIF Input

• 4 TOSLINK, format according to Alesis specifications
• Compatible with SPDIF (IEC 60958)
• Standard: 32 channels 24-bit, up to 48 kHz
• Double Speed (S/MUX): 16 channels 24-bit 96 kHz
• Quad Speed (S/MUX4): 8 channels 24-bit 192 kHz
• Bitclock PLL ensures perfect synchronization even in vari-speed operation
• Lock range: 31.5 kHz - 50 kHz
• Jitter when synchronized to input signal: <1 ns

Optical ADAT/SPDIF Output

• 4 TOSLINK, format according to Alesis specifications
• Compatible with SPDIF (IEC 60958)
• Standard: 32 channels 24-bit, up to 48 kHz
• Double Speed (S/MUX): 16 channels 24-bit 96 kHz
• Quad Speed (S/MUX4): 8 channels 24-bit 192 kHz

Analog Headphone Output 33/34

• Dynamic Range (DR): 110 dB RMS unweighted, 113 dBA
• Frequency Response at 44.1 kHz, -0.5 dB: 0 Hz - 20.8 kHz
• Frequency Response at 96 kHz, -0.5 dB: 0 Hz - 45 kHz
• Frequency Response at 192 kHz, -1 dB: 0 Hz - 89 kHz
• THD @ -1dBFS: -96dB, 0.0016%
• THD + N @ -1dBFS: -95 dB, 0.0017%
• Channel separation: >100 dB

Output: 6.3mm TRS jack, unbalanced

• Output Impedance: 2 Ohms
• Output Level at 0 dBFS, 1 kOhm load: +9.5 dBu
• Maximum Power @ 0.1% THD: 50 mW

Digital

• Clocks: Internal, ADAT In, SPDIF In
• Low Jitter Design: <1 ns in PLL mode, all inputs
• Internal Clock: Jitter 800 ps, random spread spectrum
• Jitter suppression of external clocks: >30 dB (2.4 kHz)
• Effective clock jitter influence on AD and DA conversion: close to zero
• PLL guarantees zero dropouts, even at more than 100 ns jitter
• Supported Sample Frequencies: 28 kHz up to 200 kHz

General

• Power supply: USB bus powered
• Typical power consumption: 1.2 Watts
• Current at 5 V operating with bus power: 230 mA
• Maximum power consumption: less than 2 Watts
• Temperature range: +5° to +50° Celsius (41°F to 122°F)
• Relative Humidity: <75%, non-condensing