Cuttin-Edge, On-the-Spot Reporting

High End 2018: Marantz KI Ruby

Marantz is using the occasion of High End 2018 to release its new SA-KI Ruby SACD player and PM-KI Ruby integrated amplifier. The KI in there stands for Ken Ishiwata, the company’s brand ambassador, who is celebrating his 40th anniversary with Marantz (hence, the Ruby designation).

Ken Ishiwata

An audiophile and engineer with extraordinary fashion sense, Ken has been involved with the design process for many Marantz components. Models with KI’s imprimatur get special attention, however, and many go on to become collector’s items.

Ken Ishiwata

The SA-KI Ruby SACD player plays SACDs, CDs, and data discs containing high-resolution audio files. It also features a USB Type-B port for a computer connection, and its DAC can handle up to 32-bit/384kHz PCM and DSD256 files. All PCM signals are converted to the DSD format using Marantz Musical Mastering, a process that involves filtering, oversampling, noise shaping, and dithering.


Accompanying the new SACD player is the PM-KI Ruby integrated amplifier, which is rated to deliver 100Wpc into 8 ohms or 200Wpc into 4 ohms. The PM-KI Ruby features a high-performance built-in moving-magnet / moving-coil phono preamp and a heavy-duty aluminum front panel and chassis. Both units feature Ishiwata’s signature on the front, of course, alongside an embedded ruby. They are expected to cost €4000 each when released.

Al Griffin
Senior Editor, SoundStage!