Input Gain Control 3-band EQ (Bass, Middle and Treble) Middle Frequency Scoop Toggle Notch Filter ON/OFF Toggle Switch with Precision Adjustment Control Effects: Chorus, Reverb and Freeze Input Optimization Toggle for Piezo or Magnetic Pickups 60 Seconds Looper XLR DI Output 1/4″ TRS Send / Return Inputs 1/8” Aux-in 1/8” Headphones Out USB Input for firmware updates (Micro B USB 2.0)