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This pedal produces a distortion that is known from the heavy metal music of the eighties. The “COLOR MIX” tone control is very sensitive and the DIST got a lot of punch. It’s a great pedal if you want the 80s Marshall sound without actually using a Marshall amp.

Text from, Boss Classics:

This pedal sounded as if it was spawned from the devil himself. Well, not exactly, but it did offer legions of young metal-heads the thickest, most obscene distortion tones around – perfect for that ’80s metal sound -all in a convenient little stomp box that looked pretty evil. Grrrrr.

BOSS HM-2 Heavy Metal


  • Controls: Level, Color Mix (L, H), Distortion
  • Connectors: Input, Output, AC Adaptor
  • Current Draw: 10 mA (DC 9V)
  • Weight: 400 g (14 oz.)
  • Input Impedance: 1 MOhm
  • Recommended AC Adaptor: ACA Series


  • Black – Made In Japan
  • Green – Made In Japan
  • Black – Made In Taiwan

The HM-2 was sold from October 1983 to October 1991.