A 4U DIY interpretation of the iconic BOSS DR55 drum synthesizer

Fully analog with added manual trigger inputs so one can play it like finger drums.

4 Drum voices, single outs and a built in mixer are also on board.
Classic 80s sound, pairs perfectly with hTM

Kick Drum with pitch and decay control (selfoscilating beyond a certain threshold)

Snare Drum with pitch and decay control (selfoscilating beyond a certain threshold)
HiHat with adjustable filter switches

Rim Shot with pitch and decay control (selfoscilating beyond a certain threshold)

Drum triggers nor sport wider buttons with dedicated colors for each drum
Trimmers for a usable noise-to-clarity ratio and for the noise gate in the Rimshot
Optical clipping stage on the master/rim output

The h series modules require a h bracket to be mounted in a 1U space