“Up for sale is a rare JHS SD-1 Pro-Rhythm Analogue Drum Synthesizer from the late 70’s from John Hornby Skewes (JHS).
The item has just had a fully service so works perfectly and was from my collection which I am in the process of selling.
The SD-1 is a battery powered drum synth with sound shaping controls and a rubber pad which, when hit, triggers the analogue circuitry for an infinite variety of possible sounds from deep bass to high pitches to sweeping disco tones.” Click here to search for synths on eBay