via this auction

• Excellent working condition
• Excellent cosmetics-- just one noticeable scratch on top from racking-- super clean-- bright screen
• Very little use
• Includes multiple bank Mega Cartridge (value approximately $200)
• Cartridge is loaded with favorite sounds from dozens of soundbanks-- documentation is included of each sound and each memory location
• The MKS-70 has three EPROMs that were updated over the years by Roland.
Calling all synth nerds:
• This unit has the OS 1.08 OS update EPROM A for the Assigner Board. That is the final version and it features all the bug fixes.
• It has the 1.03 OS update EPROM for boards B and C. Curiously, the OS # for those boards rose to 1.06, but 1.06 has the identical content of 1.03.
• Conclusion: This unit has all final, actual, functional updates by Roland.
• Comes with the special Roland power cable"