MATRIXSYNTH: Vintage Korg Analogue Synth, M-500SP Micro Preset SN 792378


Sunday, December 30, 2018

Vintage Korg Analogue Synth, M-500SP Micro Preset SN 792378

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"This is the slightly later version with a khaki control panel and built-in speaker, so probably dates from 1980-81. They sometimes get a bad press but there are actually some really great sounds on board (e.g. Synthe 1 32' for basslines & Synthe 2 8' for leads - apparently it uses the same filter chip as the MS10 & 20) once you get used to the quirky controls... I'll be sad to see it go, but I just don't have the space for it anymore.

It's in pretty decent condition for its age - cosmetically there are some scuffs and scratches, but nothing serious; it has lived in my home studio since I've had it, and looks to have had a fairly quiet life before that. These often seem to develop a fault where some of the presets stop working. On this one, once its warmed up they all work - though some need a bit of coaxing with the rotary selector before they settle down - some switch cleaner on the contacts would probably help...

Other than that, there are no crackly pots or switches, and both outputs as well as the internal speaker are working, though recently I have noticed a low (in volume) high pitched noise when using the line out (not affected by the volume or filter controls, so possibly a slightly noisy output transformer...?) - it's not audible when not playing, and doesn't come through the built-in speaker, so not a huge issue. The synth has probably never had a service in its life, so a check-up by someone competent is recommended, and should keep any future issues at bay."

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