Marantz has been designing and making amplifiers for more than 65 years, and for 40 of those the products have reflected expertise of Ken Ishiwata. Now, to mark his four decades with the company, the SA-KI Ruby SACD player has been developed and tuned by a highly experienced engineering team led by KI himself. Features the same disc mechanisms as the SA10 that play SACDs, CDs and compilations on CD-ROM or DVD-ROM. The SA-KI Ruby includes an asynchronous USB input that handles formats up to PCM/DXD 384kHz/32bit and DSD11.2MHz and treats all digital music with a unique Marantz Musical Mastering technology. By up-converting all file formats to DSD, using advanced filtering and processing and direct 1-bit conversion to feed the analog outputs, the SA-KI Ruby delivers sound with remarkable clarity, effortless dynamics and exceptional presence—plus, features a laser-engraved Ken Ishiwata signature to commemorate his legacy.

Designed to celebrate the 40-year anniversary of legendary Marantz sound master, Ken Ishiwata, SA-KI Ruby features pinnacle performance that’s synonymous with Marantz excellence. Complete with thoughtful engineering, painstaking tuning and extensive listening sessions, SA-KI Ruby achieves the elevated output worthy of its name. Elegantly features Ishiwata’s laser-engraved signature to commemorate the design and heightened listening experience that honors the decades-long partnership between him and Marantz.

The SA-KI Ruby is a fully functional digital-to-analog converter for music stored on a home computer and features Optical and Coaxial digital inputs for existing source components. These inputs support files up to 192kHz/24bit and contain a USB-B asynchronous input for direct connection with a computer. The USB-B input is compatible with PCM and DXD music files at up to 384kHz/32bit, as well as DSD2.8MHz, DSD5.6MHz and DSD11.2MHz.

Built with an integrated DAC, the SA-KI Ruby features an all-new disc transport mechanism that re-engineers the digital to analog conversion. Taking full advantage of the 1-bit conversion technology, the SA-KI RUBY incorporates innovative new filtering and up-conversion, providing a simple yet elegant solution.

The power supply of the SA-KI Ruby features a large high current toroidal power transformer with OFC (oxygen-free copper) secondary wires, along with high speed, high current Schottky Barrier Diodes in the rectifier stage for the purest DC voltage output.

The elegant remote control features an intuitive ergonomic layout and is equipped with amplifier control functions to operate both the SA-KI Ruby and the complementary PM-KI Ruby reference class integrated stereo amplifier. Use the integrated remote control input and output jacks to connect the SA-KI Ruby to other compatible Marantz components. An internal/external switch on the rear panel provides additional system control flexibility.

The purely analog design of the PM-KI Ruby contributes to its noise-reduction structure and clean build. Rather than build the DAC into the amplifier, which would add noise within the chassis, Marantz built the PM-KI Ruby without one and then implemented the DAC in the SA-KI Ruby Super Audio CD Player. This eliminated interference with the delicate analog signals passing through the amp, maintaining an analog environment that’s as pure and clean as possible.

The deluxe low noise LC display features clear, easy to read alpha-numeric characters and is compatible with CD Text encoded music discs. Display can be turned off via the display control button on the remote. For enhanced user experience, bit depth of the input signal is now available on the front display of the SA-KI Ruby.

Connect your favorite headphones directly to the SA-KI Ruby via the convenient front panel headphone jack, which also features its own selectable gain control. The headphone circuit is compatible with the widest range of headphone types and lower impedance headphones. The diameter of the volume knob was increased by 35% over the previous SA-14S1 for easier control and fine tune adjustments.