ART Pro Channel II

• 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

Input Impedance

• Mic : 150 to 3.4k Ω, variable
• Instrument : 2.5M Ω
• Preamp Insert : .5k Ω

Output Impedance

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

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
• Power Requirements : USA - 105 to 125 VAC/ 60 Hz
• Export units configured for country of destination.