The 400 PRO HD includes a Five-band EQ (including a Three-Band Semi-Parametric EQ with Gain Control and On/Off switch) an easy to use adjustable Compressor and an Enhance switch which emphasizes highs and lows. The Balanced XLR line out comes complete with a Ground Lift, Line Out Level and a Pre/Post EQ switch. The Mute switch disables all outputs except the Tuner send. A One-button footswitch that enables/disables the Three-Band Semi-Parametric EQ is included