ART Pro Audio ProChannel II Rackmount Recording Microphone Preamp

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

SpecificationsInput Impedance

• Mic: 150 to 3.4K Ohms, variable
• Instrument: 2.5M Ohms
• Preamp Insert: .5K Ohms

Output Impedance

• Balanced Output: 600 Ohms balanced
• Unbalanced Output: 300 Ohms
• Insert Outputs: 300 Ohms

Frequency Response

• Analog In to Analog Out: 12Hz to 100KHz +0, -1dB
• THD @ 1 KHz: <0.15% typical
• THD @ to to 20 KHz: <0.033% typical

Equivalent Input Noise

• Mic/Line: -128dBu, Input shortened, Max gain, “A” weighted
• Instrument: -109 dBu, Input shortened, Max gain, “A” weighted

Maximum Input Level

• Mic: +18dBu balanced
• Instrument: +15 dBu

Maximum Gain

• Mic: 70dB (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: 0 – 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: 00 mSec to 3 Sec.
• Compression Ratio: 2:1 to 30:1

• Dimensions (H x W x D – in): 3.5 x 19.0 x 9.2
• Dimensions (cm): 8.9 x 48.3 x 23.3
• Weight (lbs/kg): 11/5
• Power Requirements: USA – 105 to 125 VAC/ 60 Hz

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Note: 0 dBu = 0.775 VRMS, 0 dBV = 1 VRMS