For well over four decades, Ken Ishiwata was in the business of improving already pretty decent pieces of hi-fi, mostly for Marantz. The closest the hi-fi industry came to a mainstream personality, Ishiwata particularly enjoyed bringing performance hikes to attainable equipment – and as a result, the Marantz range of ‘KI Signature’ amplifiers and CD players remains highly prized to this day.
Having parted ways with Marantz, Ishiwata began working his magic at Rotel.
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