Roland SVC-350 Vocoder oos a step-down transformer is recommended

a step-down transformer is recommended for extended use

And two demos of the unit getting a first test after being put back together:

UK 240v Unit

In excellent order

the other controls the digital oscillators and effects

Roland SVC-350 Vocoder oos a step-down transformer is recommendedClassic, analogue vocoder: serviced and in exceptional clean condition. A superb piece of kit (as you'd expect from this era of Roland gear) we've had a few of these through but never one this clean. This VP 330 and SVC 350 Vocoder page on Vintage Synth Explorer has some useful information and links to demos. Serviced, tested and in full working order. Our tech says its the best he's heard. Any minor crackle on pots and sliders will clear with use.