A basic but complete application of the 3340 VCO
https://kassu2000.blogspot.com/2018/06/vco-3340.html
If you had an Unicorn Account you could see a chart with the price development of this module and the average price asked for this module.
3340 VCO modules for sale
real CEM 3340
Very good condition
80 euros each
based in France
You can check my ratings as seller on Audiofanzine (5/5, 50 votes)
https://fr.audiofanzine.com/membres/660495/
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