The 882|20 Audio Interface (MH072) is a peripheral used with Pro Tools. It connects to a MIX, MIX I/O, d24, Disk I/O PCI, DSP Farm PCI, or Project II card.Analog-to-Digital Performance 20-bit A/D converters, Delta-Sigma Signal-to-Noise Ratio: 103 dB or greater (A-weighted); 100 dB or greater (unweighted) @ 22 Hz - 22 kHz THD+N: <0.003% @ 1 kHz; 20 Hz - 20 kHz Frequency Response: >22 Hz to 22 kHz, +/-0.5 dB Digital-to-Analog Performance 20-bit D/A converters, Delta-Sigma Signal-to-Noise Ratio: 98 dB or greater (A weighted); 96 dB or greater (unweighted) @ 22 Hz - 22 kHz THD+N: <0.003% @ -1 dBFS, 1 kHz; 22 Hz - 22 kHz Frequency Response: >22 Hz to 22 kHz, +/-0.5 dB Misc. Specifications S/PDIF resolution: 24-bit Max input and output level: +18 dB Physical Specifications Voltage: 85 to 264 VAC Frequency: 47 to 63 Hz, autoswitching Wattage: 5 W typical, 30 W max Weight: 4.8 lbs. (2.2 kg) Dimensions: 1U external rack mount device; 19"x 1.75"x 7.5"(48.26 cm x 4.45 cm x 24.77 cm); black anodized finish