MA-15A Micro Monitor Amp is now part of! All the Boss pedals you love are still here, along with expert reviews of electric guitars, amps, and more.

Boss Pocket Dictionary Vol. 1-4 (1984-1987)

The easy-to-operate MA-15A Micro Monitor Amplifier can be used as a practice amplifier, stage monitor and more. It is compact, yet produces 15W of output power, and incorporates a full-range 12cm speaker that produces a clear, powerful sound. A headphone jack also lets you enjoy practicing without disturbing others.

  • High and Low gain inputs allow the MA-15A to be connected to a wide array of instruments, including guitars, keyboards, microphones, etc.
  • The MA-15A can be connected to a tape recorder or FM tuner by means of the Auxiliary input, permitting you to play an instrument while also operating a tape recorder or tuner, thus facilitating the practice of playing techniques.
  • An optional MSA-100 Speaker Adaptor allows the MA-15A to be attached to either a music stand, microphone stand or wall/ceiling for adjustment of the angle of the unit.


  • Power: AC Powered
  • Output: 15W (RMS)
  • Power consumption: 23W
  • Speaker: 5 inch full range
  • Dimensions: 300(W) x 167(H) x 162(D)mm (12″ x 6.7″ x 6.5″)
  • Weight: 3 1 kg (7.5 lbs.)
  • Accessory: Metal adapter for Microphone stand