Designed by Markbass and top studio session bassist Paolo CostaCombines two channels: CLEAN and AMPCLEAN is direct channel with parametric filter EQAMP channel has 3 types of distortion (2 tube-driven, 1 solid state)Variable Pre-shape FilterHigh-pass filterPush-pull knobs for storing distortion settingsPro compressor on the amp channel3 balanced XLR outputs for recording channels separately or together1/4" input jack works with both passive and active bassesGain knob for inputGround lift switche