Tuesday, November 15, 2016
KORG M-500SP Micro-Preset Vintage Analog Synth - M500 with Speaker - SN 781345
via this auction
"Up for sale is KORG M-500SP Micro-Preset vintage analog synthesizer. One of the most earliest and rarest synths Korg produced in the '70s, M-500SP is M-500 with built-in speaker on the bottom of the unit.
The unit appears to be working reasonably well, all the keys and sliders and buttons worked fine when I tested. However I noticed some of the keys have unstable pitch which could do with some servicing/adjustment as there is also a slight scratch noise on a few of the knobs when controlling. The speaker is sounding fine..."