STORM DS-3 DRUM SYNCE

via this auction

"This is a very rare vintage drum synce in fully working condition. Produced in the 1980's it clips on to the rim of any drum and when the drum is struck gives out a classic vintage synth sound.

controls
* Volume
controls the output volume
* Sensitivity
controls the sensitivity of the module (the threshold at which it is triggered)
* Rate
controls the speed/rate of the LFO wave that controls the pitch
* Decay
controls the length of the sound
* Mode
controls the depth of the LFO wave that controls the pitch
* VCO
controls the pitch of the Oscillator
* Sweep
controls the range in which the oscillator sweeps

sockets
* FT/SW
input for footswitch
* FT/SW
input for footswitch
* Out
audio output"