Synton rare vintage synth modules -VCO/LFO/VCF/ENV

via this auction
"Here are a collection of rare Synton Modular Synth modules.

There are untested ,and do not come with a power supply and theVCF has had its pots de-soldered to fit in another system.They run on a standard +/-15v supply and have all the original knobs and banana connectors .All of the modules have their power connections on bare wires.Due to their age and because I can't test them , they are sold as seen for spares or repairs.They were bought by me as a project to repair , but I don't have the time and they should go to a better home.There are no returns.

The modules include :

3021 VCO with CEM 3340 VCO chip , it has a variable square wave , sawtooth and sine wave output all available at the same time.sync and PWM and Linear FM inputs.This module was working fully , but is now untested.

3023 VC LFO /VCO - triangle , square outputs , voltage control in of frequency and a variable waveform that goes from sawtooth to triangle to inverted sawtooth

3235 ENV/CPR - this is an envelope follower, trigger delay , and CPR , which is I think a trigger that is generated when a voltage is input above or below a variable set voltage level.

3010 VCEGR - this is a voltage controlled Envelope generator with every stage of the envelope controllable by CV for very expressive and complex envelopes.Standard gate input and VC input for ADSR.

3047 VCF - a multi-mode VCF , which is variable from low pass to hi pass through notch on a variable knob.frequency and resonance controls and a separate band pass output.This is a really nice and unusual filter.Does not use a CEM or SSM chip, so sounds very different.This one has had the pots and banana's de-soldered presumably to fit into another format , but it's easily put back together- nothing is missing.

The modules come with a eurorack format case that is solid and heavy , so if you are just interested in the modules , you don't have to have the case.The modules are not fixed in , but were put in this case for safe keeping.

Synton modules are extremely rare and were very high quality , these have not been tested recently , though they were working with a +/- 15v power supply in the past.These are sold as seen ."