400W @ 4 Ohms, 280W @ 8 Ohms, 500W@2 Ohms 3-MIDI programmable channels: MIDI Assignable 6-band Graphic EQ with single On/Off switch. Can be activated for any/all channels then stored and recalled by the included 5-button MIDI foot controller. Assignable Series or Parallel Effects loop with single On/Off switch. Can also be activated for any/all channels then stored and recalled by the included MIDI foot controller. Master front Volume control Master "Density" control. Adjusts the power amp low end dynamics. Master "Presence" control. Adjusts the power amp extreme high end dynamics