MATRIXSYNTH: KORG MONO/POLY MP-4 w/ MIDI

Wednesday, July 14, 2021

KORG MONO/POLY MP-4 w/ MIDI



via this auction

"Work list (Excerpt):

Change all elec. caps and opamps,
New transistors and opamp installed on power supply board.
Change transistors in DAC part and opamps on CV route on key assigner board with new ones.
New "spark-killer" capacitor installed (relocated on power switch pins).
Keys knobs, switches and jacks cleaning.
CHD MIDI installed.
Adjustment."

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