MPC Electronics DSM 1 & 2 System

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via this auction

SN 923, 1260, 1350

This system includes one D.S.M. 1 module which provides a single drum voice and acts as a power supply for up to five additional modules. (BTW, it's important to know that the power supply jacks on the backs of the units should not be confused with MIDI jacks, although they use the same connectors.) It is accompanied by two D.S.M. 2 modules, each featuring two drum voices. These drum voices sound very much like Simmons SDSV sounds in both style and quality, and several useful synthesis parameters are provided to allow you to shape the sounds to your individual taste.

There are only a few issues to note. On D.S.M. 2 module #1350, both of the Mix controls are starting to feel as if the wipers in the potentiometers are about to give out. You can still create useful changes in the audio, but they jump a bit, and both should be replaced in order to achieve smooth operation. And on D.S.M. 2 module #1260, the Click potentiometer for drum synth 1 has been noticeably replaced. It works great, but the part that was used is slightly different in size, and it sticks out from the rest of the knobs.

Otherwise, this drum synthesis system is in great shape for its age. The LEDs and switches are immediately responsive, and the knobs are not scratchy. Most importantly, the drums sound clean and loud...