Jen GS-3000 Syntar Electronic Guitar Synthesizer

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The Jen GS-3000 is one of the first syntars, bevor the Liberation by Moog. He is called a Minimoog for guitarists, the basic signal layout approximates this synthesizer. He is created specifically for guitar. Instead of a keyboard there is a 6-pin dim input jack on the front for the original glue-on hexaphonic guitar pickup.

Instead of a keyboard a hexaphonic pick-up triggers two VCOs, thus making it a simple but quite powerful mono-synth. Both VCOs are capable of tri, saw and pulse/square waves. VCO2 is tuned relatively to VCO1 in order to obtain some fat detuning or those classic 5ths and 7ths. Sound is fed though a lowpass VCF (24dB/oct) before reaching the VCA. VCA and VCF have independent envelopes of the atypical ADS variety (no release). (source: tonehome.de)