Roland SVC-350 Vocoder For Sale. Rackmount classic. Excellent clear vocoding for your robotic electro boogie. Filter bank for precise tone control. If you love electronic voice effects, this one's for you. Has inputs for modulator and carrier signals and an excellent 11 band filter to shape your vocoded sound. Great for that talking robot effect and a whole lot more. Domo arigato, Mr. Roboto indeed!