ART Pro Channel II, discrete Class-A Tube microphone preamp, Optical Compressor with separate Attack and Release controls, Auto/Manual Attack/Release switch, Parametric EQ, VU and LED meters, Multi section clip monitor LED, two insert loops, +4/-10 dB switch, 1/4" High Z input, XLR Mic-Input, Line-Out XLR balanced and 1/4" TR unbalanced, 19" 2U, Dimensions: 89 x 483 x 233 mm (HxWxD), Weight: 5kg