This is the printed instruction sheet for the BOSS HM-2, a compact distortion effect designed for Heavy Metal music. It explains the pedal's features, names each control and jack, and shows how the knobs shape the sound.
The booklet then walks through connecting the HM-2 to a guitar and amplifier, operating it with the pedal switch, replacing the 9-volt battery, using an optional BOSS AC adaptor, and closes with a short specifications table.
| Power consumption | 10 mA at 9V |
|---|---|
| Controls | LEVEL, COLOR MIX L and H, Distortion, Normal/Effect selector switch, battery check indicator |
| Jacks | Input, Output, AC Adaptor |
| Weight | 400 g / 14 oz |
| Battery type | One 9-volt battery |
Press the pedal switch once to turn the effect on; the indicator lights up. Press it again to return to the normal sound.
It uses one 9-volt battery. Loosen the thumb screw of the pedal to open the cover and take the battery out of its housing, then fit a new one.
Use a BOSS AC adaptor; the sheet lists the BOSS ACA-120, ACA-220 and ACA-240 for AC operation.
COLOR MIX H boosts or cuts the high frequency around 1 kHz, and COLOR MIX L boosts or cuts the low frequency around 100 Hz; both are flat at the center position.