via this auction
"Roland SH-101 analog synthesizer professionally modified by Diabolical Devices. We have added an audio input for the VCF with a level adjustment. This allows you to input any line level signal and either mix it with synth VCOs or process just input signal (by adjusting source mixer). This is a great feature for this keyboard!! The VCA effects audio input too so you can adjust ADSR settings or pass signal straight using "HOLD" feature. The VCF can be modulated by sh-101s triangle, square, of random LFO, or by the envelope generator. Awsome effects for DJs or for processing drums or anything else. We have aslo added 1/8" outputs for Triangle, Square, and Random modulation which can be used to control external synths....Or trigger circuit-bent sounds in one of our modified Casio SK-1s. This would also go REALLY well with the modified x0xb0x (roland tb-303 clone) that we currently have listed."