via this auction
Pic of the inside below.
"It's an early rev OB-8, with no "Page 2" serigraphy on the front panel, the keyboard is a Pratt-Read one( which is better in many ways than the later Matsushita keyboard), it also got the individual CEM3360 VCA IC per voice ( instead of the CA3080 OTA with later rev ), and was already retrofitted with factory MIDI !Excellent cosmetic condition, with most notably 2 defects on the front panel ( check pics ), just above " cassette" and around PW knob in OSC section . Beside that, it's really excellent for a 40 year old instrument! A custom made flycase is also included with the sale .
The OB-8 works perfectly , VCOs are almost immediately stable when turned on, and the sound is nothing but a delight !
The new OS upgrade by Tauntek might be installed upon request ( additional fee will apply )
You'll be able to save/ import your patches via MIDI (Sysex), and most of all, you'll be able to control all of the OB-8 parameters with MIDI CC !
Here is a detailed report of the service work :
- New capacitors ( electrolytic / tantalum ) for the whole machine
- New bridge rectifiers w/ heatsink
- New trimmers for the whole machine ( including pan pot trimmers )
- Complete calibration according to the Service Manual
- New battery & import of the factory patches
- New set of 22 potentiometers for the front panel : these have been custom assembled and are identical to the original ones ( as they are now impossible to find )
- A dozen of logic chips on the CPU Board / Front panel have been replaced
- The keybed have been serviced : new bushings, J-wire cleaning, key alignement , overall cleaning
- New 40 pin ribbon cable between CPU => Midi Board
- Interal missing screws have been replaced by new ones
- New on/off switch : the original one didn't lit any more, so it was replaced by the exact same part"
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