Thursday, March 16, 2017
DENKI SANGYO CO. LTD. Sequential Circuits Prophet 600
via this auction
SN appears to be 0290 J or 0890 J. J is likely for Japan. Note the DENKI SANGYO CO. LTD. AC 100v label on the back. They are still around and work with electrical equipment & material design. Now I'm wondering how many other synths have a DENKI label on the back.