Trouvé ça dans un magazine britanique de décembre 1978, "Sound international" :
Confused by the mass of synths on the market that don't quite do what you want? Then you could do worse than contact Selidor. They're a little company that specialises in custom building synths and electronic musical devices, and converting and interfacing with existing models. They've so far built synthesised drums, complete stage synths, and are heavily into the new digital synthesiser technology. They've recently taken on the task of adding digital patching and memory-recall to a Roland System 700, based round a microprocessor. They've also got a really stable oscillator design that they reckon is the best they've heard. Give 'em a call if you think your synth needs a bit of extra wizardry.
