The Pro Channel II from ART is a channel strip featuring a second-generation discrete Class-A microphone preamp, followed by a compressor and a 4-band semi parametric EQ section. The electronics of the preamp provide clean quiet gain while maintaining transparency. Analog and LED meters provide a detailed indication of audio levels.
The compressor is able to subtly control transients and noise on the most demanding sources, while the EQ offers wide tune-ability, and can be patched before or after the dynamics processor. Separate rear panel insert points allow patching in external signal processors immediately after the microphone preamp, and before the EQ and dynamics processor.
| Number of Channels | Single |
| Inputs | 1 x 1/4" TS phone Instrument (front panel) 1 x XLR Microphone 1 x 1/4" TS phone Comp In (return) 1 x 1/4" TS phone EQ In (return) |
| Outputs |
1 x XLR 1 x 1/4" TRS phone |
| Frequency Response | 12 Hz to 100 kHz, +0,-1.0 dB |
| THD |
1 kHz: < .015% typical 20 Hz to 20 kHz: < .033% typical |
| Noise |
EIN Mic/Line: -128 dBu, input shorted, maximum gain, A-weighted Instrument: -109 dBu, input shorted, maximum gain, A-weighted |
| Preamp | |
|---|---|
| Gain Range |
Microphone: 70 dB (XLR to balanced output) Instrument: 64 dB (1/4" to balanced output) |
| Input Impedance |
Microphone: 150 to 3.4kΩ, variable Instrument: 2.5MΩ Preamp Insert: 7. 5kΩ |
| Maximum Input |
Microphone: +18 dBu balanced Instrument: +15 dBu |
| Output Impedance |
Balanced Output: 600Ω balanced Unbalanced Output: 300Ω Insert Outputs: 300Ω |
| Maximum Output |
Balanced: +24 dBu Unbalanced: +20 dBu Output Level @ Meter 0 VU:+4 dBu/-10 dBV |
| Phantom Power | +48 V |
| Compressor | |
|---|---|
| Threshold Range | -20 dB to +20 dB |
| Ratio | 2:1 to 30:1 |
| Attack Time | 250 µs to 100 ms |
| Release Time | 100 ms to 3 s |
| Sidechain | No |
| Equalizer | |
|---|---|
| Frequency Bands |
Low: 40/120 Hz, selectable Low-Mid: 20 Hz to 2 kHz, continuously variable High-Mid: 200 Hz to 20 kHz, continuously variable High: 6 kHz/18 kHz, selectable |
| Bandwidth | Low- and High-Mid can be switched to Wide or Narrow |
| Range (Boost/Cut) | +/-12 dB on each band |
| Physical | |
|---|---|
| Power Requirements | 105~125 VAC, 60 Hz |
| Dimensions (WxDxH) | 19 x 9.2 x 3.5" (483 x 234 x 89 mm) |
| Weight | 11 lb (5 kg) |
| Specialties | Low-Cut Filter: 10 Hz to 250 Hz, 1-pole, 6 dB/octave |