Oberheim Matrix-6R

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SAKATA SHOKAI, LTD JAPAN

Anyone know what those little jumper looking things on the bottom shot are?

Update: a couple of people have written in to call out it's a small gridded vent. That's just some solder points on the PCB.

Vintage SAKATA DPM-48 Digital Percussion Drum Machine SN 522414

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Oberheim Xpander Site

Title link takes you to a nice Oberheim Xpander site. Make sure to check the "Xpander inside" link to see the differences between the US and Japanese(?) versions. Also check out the KRAAKDOOS (Crackle Box) and the Orange page. ;) BTW, if you have an Xpander and are wondering what version you have but you do not want to open the box, the US version has its lettering over the jacks in the back while the Japanese version has it below. Or... Aeonian on AH posted that his has "SAKATA SHOKAI LTD "Made in Japan" on the serial badge"