Buffered 3340 Based VCO you can buy or build
https://aisynthesis.com/product/ai011-voltage-controlled-oscillator
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.
The AI011 VCO - a powerful and accurate analog VCO that uses the Curtis 3340 IC. Sounds fantastic on its own, or when FMed or Synced to another VCO. Features include: Outputs for Sine, Triangle, Square, and SawtoothSoft and Hard SyncPulse Width Modulation (can fully close the waveform to silence at the extremes)Linear FM 1 V/o tracking over several octavesA coarse and fine tuning knob Includes ribbon cableNote: this is a DIY build of the AI011 VCO. This is not my first build, nor is it my first build of this exact model of VCO. I really like this module, I just bought a few extra panels and PCBs to build so I could offset the cost of ordering parts. If you have any concerns about the module, I have included a video in the post to demonstrate everything is working, plus I will honor the Reverb recommended return policy if you have any issues with it. This is my first reverb listing for this module, but I plan to sell another extra in the near future. If you are interested in buying two for the FM/Sync capabilities feel free to send me a message.
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