Here's vintage, perfectly working original drum synth "ELSITA". It has four inputs for drum triggers and one mono audio output. But interesting thing: every input for trigger can work as audio input, and this way drum module works as audiofilter, it distorts sound a bit but overall effect is interesting, and every audio impulse trigs synth part. So you can use audio signals as triggers, and sequence beats via external audio devices (because ELSITA doesn't have MIDI input).

About condition of this device: it works perfectly, but cosmetically has some tiny scratches

I will also include five 5pin-to-monojack adapters for this device (4 for trigger inputs, 1 for audio output).