S/R-8
[If anyone owns or has a picture of the S/R-8, please let us know.]
The S/R-8 is an 8-voice synth expansion module, basically 8 Microcons and a power supply. It was built to work with the Roland MC-8 Sequencer.
[from The A-Z of Analogue Synthesizers, by Peter Forrest, published by Susurreal Publishing, Devon, England, copyright 1994 Peter Forrest]