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Mechlab Productions
Eurorack Schematics
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Service Manuals and Schematics
PSS-460 Service Manual
DigiTech-DSP-128-Plus-Schematics
Mattel Synsonics Service Manual
Realistic Reverb Schematic (Updated to fix IC 1-B ambiguity)
UMR2 Documentation
UMR2_Ultimate Manual
Highly Liquid UMR2 Keyboard Matrix Explained
UMR2-User-Manual-RevC-V1.0
Highly Liquid UMR2 MIDI Retrofit – Yamaha PSS-470
Highly Liquid UMR2 MIDI Retrofit – Casio SK-1
Highly Liquid UMR2 MIDI Retrofit – Teisco SX400
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