Marantz CD-63 MKII K.I. Signature Compact Disc Player Made In Japan The CD-63 MK II KI is known for its very detailed and neutral sound yet amazingly tight and powerful bass. The CD63 MkII KI, or the Ken Ishiwata Signature, to give it its full name, is considered by many as Marantz's jewel in the mid-priced crown. Designed by the master of Marantz himself, it's the final initiation before the beguiling arms of high-end hi-fi. The ‘Ken Ishiwata Signature’ models offer unparalleled quality. Ken Ishiwata, who created the SE concept, is a gifted audio designer who believes sound reproduction should touch the listener in a way no other sensation can. His personal signature on a Marantz product is the sign of no-compromise high fidelity.