Obscure Drum Module from the early 80’s.
Two analog oscillators with sensitivity, sweep range, sweep time, decay time, volume controls and a pickup input for each foot in and 1x mono Out.
The envelope depends on the input source like an envelope follower.
Even though it sounds like a Simmons It can be used for TR 808/ 909 style Bassdrums and also Drones.
The DS 200 is triggered by the mfb 502 drumcomputer (via BD & Snr)