via this auction
"Video of product at bottom. This is an electronic wizards dream. It lights up and comes on but the presets all sound the same. It functions as in emits a sound but it needs repair. I'm afraid it's going to have to be AS-IS as I don't have the talents to repair this rare beauty. Their might be only a handful of these in existence.
This ultra-rare analog monosynth is called the Proteus 1. This is a monophonic analog synth with 16 memory locations! It's based on CEM chips (as used in the Sequential Circuits Pro-One and many other classic vintage synths). Its got two oscillators with oscillator sync, an envelope generator, LFO, lowpass resonant filter, glide and noise-gen. This synth is unique for a vintage monosynth in that it has patch memory which can be programmed by the user and also has a series of lights to show when knob settings match internal patch settings."
video upload by jason essig
