Key Performance Figures

• Real World ADC Dynamic Range: 105 dB (A-weighted)
• Real World DAC Dynamic Range: 103 dB (A-weighted)
• Chipset ADC/DAC Dynamic Range: 114 dB (A-weighted)
• Latency (Minimum Buffer Size): 77 Samples

Note: For Latency, the test machine was a Dual Core 2.66gHz Xeon Mac Pro with 2GB of RAM, running 10.5.7

Microphone Inputs

• Dynamic Range (A-Weighted): 105 dB
• SNR (A-weighted): -105 dB
• Frequency Response: 20Hz - 20kHz +/- 0.1 dB
• THD+N: 0.0025% (measured at 1kHz with a 20Hz/22kHz bandpass filter)
• Noise: EIN > 120dB (measured with 50dB of gain with 150 Ohm termination (20Hz/22kHz bandpass filter)
• Maximum Input level @ Minimum gain for 0 dBFS (without pad): -2.5 dBu
• Pad Attenuation: 10 dB

Line Inputs

• Dynamic Range (A-weighted): 105 dB
• SNR (A-weighted): 105 dB
• Frequency Response: 20Hz - 20kHz +/- 0.1dB
• THD+N (A-Weighted): < 0.001% (measured with 0dBFS input and 22Hz/22kHz bandpass filter)
• Noise: -90dBu (22Hz/22kHz bandpass filter)
• Maximum level (A-weighted): 16.3dBu at 1%

Instrument Inputs

• Dynamic Range (A-weighted): 105 dB
• SNR (A-weighted): 105 dB
• Frequency Response 20Hz-20KHz +/- 0.1 dB
• THD+N, -1dBFS, min gain, no pad < 0.0025%
• Maximum Input Level for 0 dBFS (minimum gain, no pad): -3 dBu
• Maximum Input Level for 0 dBFS (maximum gain, no pad): -53 dBu
• Maximum Input Level for 0 dBFS (minimum gain, with pad): +7 dBu
• Maximum Input Level for 0 dBFS (maximum gain, with pad): -43 dBu
• Pad Attenuation: 10 dB
• Crosstalk: > 80 dB

Analogue Audio Outputs 1-2 (¼" TRS)

• Electronically Balanced Outputs
• Maximum Output Level (0dBFS): +9 dBu
• THD+N: 0.0025% (0 dBFS input, 20Hz/22kHz bandpass filter)

Analogue Audio Outputs 1-4 (RCA phono)

• Unbalanced Outputs
• Maximum output level (0dBFS): -3.5 dBu
• THD+N: 0.03% (0 dBFS input, 20Hz/20kHz bandpass filter)

Headphone Outputs

• Frequency Response: 20Hz-20KHz +/- 0.1 dB
• SNR (A-weighted): 103 dB
• Dynamic Range: 103 dB
• Maximum Output into 32R: +3 dBu (-1.4 dBV)
• Power into 32R: 24 mW
• Output Impedance: < 7 Ohms
• Load Impedance: > 24 Ohms

Additional Conversion Performance

• Clock jitter < 250 picoseconds

CONNECTIVITY

Analogue Channel Inputs (Inputs 1-2)

• 2 x XLR Mic/Line/Inst Neutrik Combi-Jacks (Inputs 1-2)
• Automatic switch of Mic / Line (inserting a jack switches from Mic to either Line or • Instrument (instrument selected via front panel)

Analogue Audio Outputs (Outputs 1-4)

• 2 x TRS analogue outputs (Outputs 1-2)
• 4 x RCA Phono outputs (Outputs 1-4)
• x TRS stereo headphone output (switchable to outputs 1 and 2, or 3 and 4)

Other I/O

• 1 x USB 1.1 compliant USB port
• 1 x pair of MIDI I/O

Dimensions

• W = 145 mm / 5 ¾ “, H = 45 mm / 1 ¾ ” , D = 220 mm / 8 ¾ “

Weight

• 1 kg / 2.2 lbs

Controls and Indicators

• 2 x Input gain control dials
• 2 x Signal (green) and Overload LED (red)
• 2 x Instrument LED and switch (red)
• 2 x Pad LED and switch (red)
• 1 x Phantom power switch with LED (red) – global for Mic inputs 1-2
• 1 x USB (Active) LED (green)
• 1 x MIDI (Active) LED (green)
• 1 x Monitoring 1+2 / 3+4 A/B switch
• 1 x Monitoring 3+4 indicator LED
• 1 x Main monitor Level control
• 1 x Mono monitor output switch
• 1 x Playback/Input mix dial
• 1 x Headphones level control

Compatible with:

• Windows Vista
• Windows XP: Service Pack 2 and above only.
• Windows XP - 64bit: Service Pack 2 and above only.
• Mac 10.6: Support is currently only for the 32-bit kernel on 10.6 (Snow Leopard).
• Mac 10.5: 10.5.7 and above only. Windows Vista - 64bit
• Windows Windows 7
• Windows Windows 7 - 64bit

NOT Compatible with:

• Mac 10.3
• Mac 10.4