PAiA Proteus 1 Analog Programable Patchable Synthesizer

Note: Auction links are affiliate links for which the site may be compensated.
via this auction

"The PAiA Proteus1 was the first analog synthesizer to feature patch memory stored in 16 locations. If that weren't cool enough it sounds similar to the Pro-One as it uses the same Curtis Electronic Music analog chips (CEM). But wait...there's more! The Proteus has more in common with an ARP 2600 than a Pro-One due to the clever rear patch bay panel. It turns the Proteus into a modular synth and since it uses 1V/Oct protocol, you can easily interface the keyboard into your modular setup. There are jacks for: VCO1 pitch, transpose, out. VCO 2: FM, transpose, out, pulse width control, hard sync and soft sync ins. VCF: cutoff frequency, resonance, out, FX send and receive. Preset advance plus Keyboard CV and gate outs. MOD: LFO and ADSR. Hi and low outs. I had it modified by Scott Lee at PAiA to add a CV and Gate I/O so I can drive it with a MIDI>CV converter, sequencer or another CV/Gate keyboard. Scott has calibrated the synth twice for me in the last 10 years. Last time was about 2 years ago. It is in excellent condition and is truly a collector’s item..."