ART Pro Audio Pro Channel II - Tube Microphone Preamplifier with Optical Compressor and Parametric EQ

The ART Pro Channel II uses second-generation discrete Class-A microphone preamp to provide clean quiet gain while maintaining incredible transparency. A powerful dynamics processor subtly controls transients and noise of the most demanding sources.

The ART Pro Channel II ‘s semi-parametric EQ offers wide tune-ability and can be patched before OR after the dynamics processor. Separate rear-mounted insert points allow patching in external signal processing gear immediately after the Mic preamp and before the EQ and dynamics processor. Both analog and LED meters provide a detailed indication of audio levels.

Features

• Fully Featured discrete class "A" Tube Microphone Preamplifier
• 1/4" High Z input on the front panel
• Selectable plate Voltage
• Smooth musical sounding Optical Compressor
• Separate Attack and Release controls
• Auto/Manual Attack/Release switch
• Parametric EQ
• Large VU and LED meters
• Multi section clip monitor LED
• Selectable Source switches for VU signal monitoring of any section of the unit
• Two insert loops
• +4/-10 dB switch for optimal signal output levels
• Toroidal power transformer for low noise

Specifications

• Input Impedance
  • Mic: 150 to 3.4K Ohms, variable
  • Instrument: 2.5M Ohms
  • Preamp Insert: 7.5K Ohms
• Output Impedance
  • Balanced Output: 600 Ohms balanced
  • Unbalanced Output: 300 Ohms
  • Insert Outputs: 300 Ohms
• Frequency Response
  • Analog In to Analog Out: 12 Hz to 100 KHz +0, -1 dB
• THD
  • 1 KHz: < .015% typical
  • 20 to 20 KHz: < .033% typical
• Equivalent Input Noise
  • Mic/Line: -128 dBu, Input shorted, Max gain, "A" weighted
  • Instrument: -109 dBu, Input shorted, Max gain, "A" weighted
• Maximum Input Level
  • Mic: +18 dBu balanced
  • Instrument: +15 dBu
• Maximum Gain
  • Mic: 70 dB (XLR to balanced output)
  • Instrument: 64 dB (1/4" to balanced output)
• Maximum Output level
  • Balanced: +24 dBu
  • Unbalanced: +20 dBu
  • Output Level At Meter: 0 VU +4 dBu/-10dBV
• Preamp
  • Microphone Gain: 0 dB to +56 dB
  • Instrument Gain: +3 dB to +50 dB
  • Low Cut Filter: 10 - 250 Hz, 1-pole, 6 dB/Octave
• EQ
  • Boost/Cut: +12 dB on each band
  • Low Freq. Tuning: 40 / 120 Hz Selectable
  • MID 1 Freq. Tuning: 20 Hz to 2 KHz continuously variable
  • MID 2 Freq. Tuning: 200 Hz to 20 KHz continuously variable
  • High Freq. Tuning: 6 KHz / 18 KHz Selectable
• Compressor/Limiter
  • Attack Time: 250 uSec. to 100 mSec.
  • Release Time: 100 mSec to 3 Sec.
  • Compression Ratio: 2:1 to 30:1
• Dimensions: 3.50" H x 19.0" W x 9.17" D
• Weight: 11 lbs.
• Power Requirements: USA - 105 to 125 VAC/ 60 Hz Export units configured for country of destination.