Korg MS-20

“Original KORG MS-20 mfg. between 1978 and 1983. Made in Japan. Being sold as “parts not working” because there are some scratchy pots and I am not a good enough synthesis person to accurately test how this is supposed to sound. Here’s what I know: It powers up and when I open up the filters all the way it seems to sound like it should. Here is what I have been able to test as best I can and feel confident listing: All keys working with no sticky keys. Both VCOs work (waveform select, tuning, octave, mix) seem to work as should. Filters (1 high pass and 1 low pass) with peak (resonance) also seem to work as should. All the Envelope Generator stages seem to control ADSR as they should and the modulation generator (LFO) seems to work as should. Portamento too. What I am not sure about is the modulation wheel. When I patch out of the Mod Wheel CV out jack I can get it to work on by patching into one of the VCO in jacks changing the pitch of one of the VCOs (not sure which one) and it only bends up. I am not sure what the button below the mod wheel does and don’t know how to test it. Again, the main reason sold as parts-not-working is the scratchy pots issue and I am not sure how to program and really test all the patch points to know if it is working 100% properly. Please make sure you are OK with that before bidding. Feel free to ask questions and if there is something you want me to test I will be happy to do so and report back. A bit history on this… I purchased it in late 1993 and it has sat in my smoke-free office unused since. So it essentially not been powered up for the last 25 years. So in spite of the scratchy pots, is is a low-hours item. Since sold as Parts-Not Working there are no returns, no inspection periods. ” Click here to search for synths on eBay