YM3812 with all variables patchable
https://recklessexperimentationaudio.com/products/ym3812-opl2-v3-pcb-panel-and-chip-only
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.
Prototype YM3812 V3This is a chiptune synth voice of the old 1980s 8-bit Adlib soundcard for the IBM PC. For some reason the knobs are reversed. I put the condition down as very good because its a prototype. Will ship out carefully and fast.
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