
Four channels of switchable microphone and/or line-level analog audio input with 48 V phantom power.

| Mute | - |
| Connectors | Four 3-terminal Euro-style detachable terminal blocks |
| Description | High-Performance Mic/Line Input Four channels of microphone / line-level analog audio input with 48V phantom power and high performance pre-amplifiers and A/D converters |
| Group Delay | < 13 samples (≈ 271 μs) at 48 kHz |
| Performance | |
| Enable Meters | - |
| Phantom Power | +48 V phantom power (meets IEC 1938 [1996] spec) |
| Input Impedance | |
| Max Input Level | 1.23 to 17.35 V rms56 to 27 dBu58.2 to 24.8 dBv (continuously variable) |
| Audio Conversion | 24-bit delta-sigma at 48 or 96 kHz sample rate |
| Amplifier Standby | - |
| Balanced (nominal) | 10 kΩ |
| Audio Output Levels | - |
| Frequency Response | |
| Inter-channel (max) | > 110 dB |
| Inter-channel (typ) | > 110 dB |
| Intra-channel (max) | > 110 dB |
| Intra-channel (typ) | > 110 dB |
| 20 Hz–20 kHz (max) | ± 0.5 dB |
| 20 Hz–20 kHz (typ) | ± 0.2 dB |
| 20 Hz–20 kHz (max) | > 45 dB |
| 20 Hz–20 kHz (typ) | > 50 dB |
| Unbalanced (nominal) | 10 kΩ |
| Common Mode Rejection | |
| Amplifier Model Support | - |
| Crosstalk 20 Hz - 20 kHz | |
| Dynamic Range A-weighted | > 115 dB |
| Dynamic Range Unweighted | > 112 dB |
| Digital to Analog Conversion (DACs) | - |
| User-configurable options (software enabled) | |
| Distortion 20 Hz–20 kHz +4 dBu (nominal input) | < 0.004% THD+N |
| Distortion 20 Hz–20 kHz 2 dB below clip (max) | < 0.06% THD+N |
| Output Trim V rms (max) dBu (max) dBv (max) | - |