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"Here is a list of the work that was done on this synthesizer:ARP 3604 Keyboard:
All old rubber Pratt-Read key bushings were replaced with new bushings
Sample and hold capacitors replaced with WIMA capacitors
CV memory opamp replaced
Aftertouch sensor added to keyboard
Keyboard Bus bars (3 total) replaced with new ones
Keyboard leveled, lubed, calibrated
New tolex and hardware
Cinch Jones connector replaced with 8-Pin DIN
ARP 2600
Case stripped, repaired, re-tolexed
All case hardware, latches, handles, rubber feet, screws, corners, finish washers replaced
Recessed 8-Pin DIN jack added
Aftertouch circuit (0-10V, 10V=Maximum aftertouch pressure) added
Old power supply removed and replaced with a Power One linear supply (Much nicer than original)
All tantalum capacitors replaced with new tantalum capacitors
All polarized capacitors replaced
Opamps in audio signal path upgraded
Reverb driver circuit completely rebuilt down to the resistors (Now it is dead quiet even when driving the reverb tank at 100%)
Reverb tank replaced with 17" Accutronics reverb tank.
Original 4019 VCA module replaced with modern clone (NEA4019) which uses very high quality matched SSM2220 and SSM2212 transistors as well as a Burr-Brown output opamp.
Power indicator lamp replaced
Unit fully calibrated
Currently, the aftertouch voltage output (0-10V) is connected to the bottom jack on the multiples. We can put a separate aftertouch jack(s) wherever the buyer would like it. The ideal spot would be to place the new Aftertouch Out right above the multiple jacks. This can be discussed with us privately.All various electronic problems with unit have been addressed and solved.
This unit is in pristine condition and has no cosmetic damage or electronic issues."
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