[sdiy] Using AS3320 as a CEM3320 replacement in vintage polysynths

Tom Wiltshire tom at electricdruid.net
Thu Jan 28 19:46:38 CET 2021

Does anyone have any experience to offer having tried this? Are the old and new chips close enough to be direct replacements? Or maybe with a bit of trimming?

There seems to have been a lot of focus on the AS3340 as a replacement chip (and there are a few little differences) but I haven’t seen or read much about the AS3320 as a drop-in replacement.

Of course, changing all the filters to maintain consistency is a possibility, and then you have a few genuine CEMs for the next repair!


      Electric Druid
Synth & Stompbox DIY
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