

"Simmons SDS-1 Drum Synth Pad & Huge EPROM Library
Includes 66 SDS Drum EPROMs, for use with Simmons SDS-1, SDS-7, SDS-9
Up for auction is a white vintage Simmons SDS-1 EPROM-based electronic drum pad in working condition, including 66 different Simmons EPROMs that are also compatible with Simmons SDS-7, and SDS-9 drum synths.
The EPROMs included with this auction are reproductions of original Simmons EPROM chips, most of the chips are original Simmons sounds, and is rare to see such an expansive library of Simmons EPROM chips being offered on eBay. I have posted recordings of all of the chips in this auction being performed by the SDS-1 in the link below.
The Simmons SDS-1 is a single voice drum synth that uses 8k or 16k EPROMs. The drum synth can be triggered by hitting the drum pad or via an external trigger input. There is a modulation section on the drum synth that allows you to set the pitch and pitch bend direction, then a separate runtime generator allows you to dial in a random pitch generator that can range from subtle to extreme. Please check out my link below to some MP3s I made with the SDS1 drum synth.
The Simmons SDS EPROM drum pad is confirmed 100% working, ZIF, LED, external trigger, output, and knobs are all functioning properly. All 40 drum sound EPROMs included with this auction have been verified and are also confirmed working. Battery functionality has not been tested, and the unit does include the batter cover that is often missing on these vintage drum synths.
PLEASE READ: The SDS-1 is in very good shape for its age, and there are some minor scratches on the Simmons SDS-1, please see pictures posted with this auction for more detail. A 6v power adapter is included with this auction.
Includes a Simmons SDS-1 drum synth, 66 EPROMs in 7 protective EPROM cases with non-conductive foam, and a new 6v power adapter. The Simmons SDS-1 User Manual can be downloaded from the link below."