"Please be aware of the different software versions, so your results may vary and you need to upgrade or exchange the EPROM. All references for this are on the internet.
The Card is rare and usable for the Oberheim OB-MX which was partly designed by Don Buchla."
**In countries that use 230 ~ 240volts**
You may need the voltage converter to use it.
ROLAND OP-8 CV Interface
The Roland OP-8 interface was designed to control Roland polyphonic synthesizers that were equipped with a DCB (Digital Control Bus) interface via the Roland MC-4 Microcomposer.The OP-8 and synthesizer were connected together usin a DCB cable. The OP-8 and MC-4 Microcomposer were then patched together using patchcords via each of their patchbays.The transpose control on the OP-8 was able to transpose the synthesizer up or down by one octave"