Korg PS-900 -1975    Weight = ? Lbs. Number mfg.= ? MRP=$?

User Manual: rvgm.l4rge.com
Reset Proceedures: N/A
Operating System code: N/A
MIDI or other control protocol: N/A
Software related Links: N/A
Patches or knob settings:
Circuit Overview: below
Scematics/Service Manual:
Common Service Issues/Tips: below
Parts Sources: Keys knobs semiconductors misc
Uncommon chips/modules used: Korg 35 VCF
General Info Links: Vintage Synth Explorer

Circuit Overview:
      Korg's first preset synthesizer, using the same parts probably as the others of the era with a bunch of preset arrangements and attack/sustain and traveller much like the later M500, but 16' 8' 4' 2' sliders and a touch bar like Sigma but with Repeat, Forte, Pitch, Vibrato, Portamento routed into it's control rather than just vibrato! Cool!

Service Tips:
     Never seen one.

I believe you'll draw mostly blank looks from Korg on these units. I have some parts that are the same so feel free to ask what the current stock is on a given thing. Some of the less common parts are getting quite hard to find though. Contact