Marantz Reference

Marantz Ruby Integrated Amplifier & Super Audio CD Player

After 40 years with Marantz, Ken Ishiwata created the PM-KI Ruby integrated amplifier and matching SACD player.

This is limited to 1,000 units worldwide. The two are sold as an integrated set.

The amplifier features a fully discrete two-stage design with separate power supplies for the pre-amplifier and power amp — plus, a moving coil/moving magnet phono stage complete with Marantz Musical Premium Phono EQ circuit and Marantz HDAM technology for signal purity and exceptional audio quality.

The PM-KI Ruby is built on a vibration-resistant double layer chassis with thick aluminum panes for rigidity and features a laser-engraved Ken Ishiwata signature. Features include:

  • Marantz high-resolution preamplifier stage with proprietary HDAM technology

  • Switching power amplifier design derived from flagship PM-10 amplifier

  • Generous output: 100W + 100W (into 8ohm), 200W + 200W (4ohm)

  • Fully-discrete, two-stage design for signal purity, with separate power supplies for preamp and power amplifier sections to reduce interference

  • Toroidal transformer dedicated to preamp for clarity and powerful sound

  • Current feedback design with newly-developed wide-range circuitry

  • HDAM® SA3 circuitry for clean signal and optimal dynamics

  • MM/MC Phono input with new discrete Marantz Musical Premium Phono EQ circuit

  • Thick nickel-plated copper independent input terminals for CD and Phono, plus Marantz-original high-quality/high-purity copper-plated speaker terminals

  • Linear volume control with new electric volume system

  • High-quality construction with double-layer chassis, 5mm thick aluminum top lid, solid aluminum front and copper-plated chassis

  • High-grade, carefully selected audio parts: ultra-low leak current Schottky diodes, low noise complementary transistors, high-grade resistors, newly developed custom electrolytic capacitors, audio grade film capacitors and mica capacitors.

  • Laser-engraved Ken Ishiwata signature and Ruby motif, marking Ishiwata’s 40-year Marantz legacy

The SACD player includes an asynchronous USB input that handles formats up to PCM/DXD 384kHz/32bit and DSD11.2MHz.

By 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.

  • Marantz-proprietary SACD/CD mechanism “SACDM-3” designed purely for audio

  • Playback of SACD/CD and compilations on CD-ROM and DVD-ROM

  • Asynchronous USB input for hi-res audio up to PCM/DXD 384kHz/32bit and DSD11.2MHz

  • Isolation of USB and digital inputs to block noise from connected sources

  • Innovative Marantz Musical Mastering “MMM-Stream” up-sampling to DSD and filtering

  • Custom-designed 1-bit direct “MMM–Conversion” from DSD to analog

  • New analog output stage with Marantz HDAM-SA3 technology and low impedance output

  • Power supply with toroidal transformer

  • Dedicated headphone amplifier with all-discrete HDAM-SA2 construction

Marantz has designated 6 products as their "Signature Line". Custom Hi-Fi showcases and has in stock 4 of the models.

Marantz TT-15S1 Belt Drive Turntable with Cartridge

Analog recording is still very alive. Quality turntables are still in demand. Digital discs simply set new performance standards that turntables must meet. Many cherished records may never be issued on digital formats. Good turntables are now more important than ever.

Marantz embraces an audiophile quality turntable with AC servo belt-drive and low-coloration tone arm to answer the need for a high performance source component for the analog record.