ANALOG SYNTH RUSSIAN VCF FILTER

images at this auction
"Up for sale is one of the best Russian based VCF filters with a really sour Rezonance Character. It is an External All In One unit that is self powered with a 12v AC wall adapter. It has an onboard LFO section and Pre Amp to amplify lower sound signals. This was intended for the Modualar Synthesizer People, but it can be used with Line level signals also. It can also handle a guitar/bass directly connected. It can easily Self Resonate.
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The actual unit is Green with red Knobs. Demos will be up soon, come back later to hear it in action.

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These are the inputs:
(1) CV
(1) FM bipolar CV
(2) Audio In (Ain)

These are the Outputs.
(1) FIlter out BP/LP (selected by swtich)
(1) LFO out
(1) LFO SQUARE OUT
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Now for the hard Facts: The pre-amp section was intended for VCO analog synth Signals, It sounds very clean with these signals because these levels are usually Beefy and Big.
It can however amplify Line level by x100. But by cranking it up all the way you will hear slight distortion and a little Noise. This also applies to Guitars/bass. In other words this is not a crystal clear Pre-amp when cranked up x100 gain. This is how I wanted it to be, distorted and sour mainly for Analog Signals. I made some demos passing various signals through the filter so you can hear it in action."