16 HD Amp Models, Up to 8 Simultaneous Effects, 512 Preset Locations. * Balanced XLR Outputs, MP3/CD Input, Variax Digital Input (VDI). * Metal Chassis, Pedal and Footswitches, Software Editor/Librarian. * Assignable MIDI Footswitch Controls, Tap Tempo, Chromatic Tuner. * Aux Expression Pedal Jack, 5-Pin MIDI Input + Output/Thru.