Simmons SDS 400

via this auction

"·This is a 4 channel analog drum synthesizer with analog trigger inputs on each channel
·Very clean, all lettering perfect and working condition - Powers ON and I can trigger all 4 channels with small piezo element shown in photo
·See http://www.youtube.com/watch?v=7mtwRtOGjH4 for what this can potentially do
·All functions not completely tested. Since I dont have the original drum interface, I cant verify sequencer with its MIDI looking trigger input connector, versus the 1/4" phone jack inputs for the 4 drum synths. No controls are obviously broken
·Some (minor) AC humm noted in headphone output, indicating power supply caps perhaps need replacing - typical for 30+ year old vintage equipment. Minor means you probably wouldnt want to record with this as-is, performance would be OK
·I'll include the piezo shown. You could have a lady friend sew 4 of these into your pants legs - two on each side - and you could trigger this machine by slapping 4 spots on your quads, while seated in a chair!
·Great deal for someone as these are very expensive as "vintage analog" gear!"