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What MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some supporting components. ~$6 in parts, two tl074 op amps and otherwise a bunch of wires backwards From 16055f0ae510d4466f2b156df715b3e97e4555d8 Mon Sep 17 00:00:00 2001 From 06eccf7d9c703f23c204313298619b9281db47b3 Mon.

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