MPD-4 MIDI Pad is now part of! All the Boss pedals you love are still here, along with expert reviews of electric guitars, amps, and more.

Any MIDI sound source can be controlled with the MPD-4. With the 3 external pad jacks it can be connected to 3 more pads as long as a BP-1 pad controller is connected. With a foot switch, each pad can have two sounds.


  • Power: 9V battery/PSA adapter
  • Controls: Value, Pad sensitivity
  • Switches: sound set, Mode (8 line DIP switch)
  • LEDs: Sound Set, Power
  • Jacks: External pads (1-2), Foot switch, DC in (9V)
  • MIDI connectors: In, Out
  • Dimensions: 152 (W) x 60 (H) x 168 (D) mm (6″ x 2 3/8″ x 6 5/8″)
  • Weight: 1.1kg (2lbs, 7 oz)