Roland RS 09 VINTAGE ANALOG string synth

via this auction and this auction
"'Roland RS 09 is a keyboard mechanism that produces the sound of the strings as well as the rich sound of the organ. Equipped with a 2-channel output and an ensemble capacity, you can create a deep and wide range sound with a stereo or PA system. And with the external input jack, you can add the ensemble effect to the sounds of various electronic and electric instruments. In connecting RS-09 to other synthesizers (SH-1) , you can get a similar effect to a polyphonic synthesizer'
from the ROLAND RS-09 OWNERS MANUAL"