Marantz PM-KI Ruby and SA-KI Ruby System

Marantz PM-KI Ruby and SA-KI Ruby System

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Named Ruby, to celebrate 40 years of Ken Ishiwata Audiophile desing with Marantz, the PM-KI Integrated amplifier and SA-KI SACD CD player and DAC are available to order in matched serial number pairs.

A limited producton run of 2000 units, (half in Black, half in Silver/Gold) means you will own one of only 500 amplifiers or CD players made in this range.

The new KI-Ruby range is strictly limited edition and available to Pre-Order as matched pairs only. Individual items will be available later in the year, but for now, these true collectors pieces are only available in matched pairs.

PM-KI Ruby

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 PM-KI Ruby amplifier has been developed and tuned by a highly experienced engineering teamed by KI himself. And it arrives bearing Ken Ishiwata’s signature and a special Ruby motif.

The PM-KI Ruby is built with just one aim – audio performance – which is why it uses a fully discrete two-stage design with separate power supplies for the preamplifier and power amp section, and draws on the design of the flagship PM-10 amplifier with its moving coil/moving magnet phono stage complete with Marantz Musical Premium Phono EQ circuit, and Marantz HDAM technology throughout for signal purity.

Purest mode offers the cleanest signal path through the amplifier, which delivers 100W per channel into 8ohm speakers, or 200Wpc into 4ohm, and there are high-quality nickel-plated input terminals, and high-purity copper speaker connections. It’s all built on a vibration-resistant double layer chassis, with thick aluminium panes for rigidity and a laser-etched Ken Ishiwata signature to set this apart as a very special amplifier.

Extensive and painstaking tuning has long been the secret of fine-sounding Marantz amplifiers, and for the PM-KI Ruby Ken Ishiwata and the Marantz engineering team used all their experience and expertise, both in the design of the amplifier and in the long listening sessions involved in finalising the sound. As you would expect for a product marking a 40-year career, the PM-KI Ruby is a real
cause for celebration, and a fine embodiment of the Marantz ethos –‘Because music matters’.

At a glance:

  • Engineered and extensively tuned by a team led by Ken Ishiwata, drawing on more than 65 years of Marantz amplifier design knowledge
  •  Marantz high-resolution preamplifier stage using proprietary HDAM technology
  •  Switching power amplifi er design derived from flagship PM-10 amplifier
  •  Generous output: 100W 100W (8 ohm), 200W 200W (4 ohm)
  • 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 precision sound
  • Current feedback design with newlydeveloped 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 independent input terminals for CD and Phono, plus Marantz original high-quality/high-purity copper speaker terminals
  • Linear volume control with new electric volume system
  • Purest Mode deactivates unwanted circuits for best audio performance
  • High-quality construction with double-layer chassis, 5mm thick aluminum top lid, solid aluminum front and copper plated chassis
  • Laser-engraved ‘Ken Ishiwata’ signature and Ruby motif, marking Ken Ishiwata’s 40 years with Marantz

SA-KI Ruby

Marantz was in at the start of CD, launching its fi rst player – the original CD-63 – in 1982. By then, Ken Ishiwata had been with the company for four years, and was to play a major role in the development of Marantz players from the start. But he went further than that: early on he realised that there was scope for highly-tuned versions of the company’s players, and thus was born the trend of Limited Edition, Special Edition and, latterly Ken Ishiwata Signature models, all designed to take the exceptional CD performance of Marantz models to the ultimate level.

Of these, perhaps the best-known is the classic CD63MkII KI-Signature, which Ishiwata describes as ‘still one of the most musical CD players we’ve produced.’ Now there’s a new classic, engineered and extensively tuned to mark Ishiwata’s 40th anniversary with Marantz – the SA-KI Ruby. Drawing on the development process for the flagship SA-10, and designed by the same team, the SA-KI Ruby features a new disc mechanism built purely for audio, the “SACD-M3”, able to play SACDs, CDs, and compilations on CD-ROM or DVD-ROM. It also has an asynchronous USB input, able to handle formats all the way up to PCM / DXD 384kHz/32bit and DSD11.2MHz, and handles all digital music with a unique Marantz Musical Mastering technology.

By upconverting all file formats to DSD, using advanced filtering and processing, then using employing direct 1-bit conversion to feed the analogue outputs, the SA-KI Ruby delivers a sound with vivid detail, effortless dynamics and remarkable presence – all qualities central to Marantz CD players over many generations.

The Marantz engineering team has created this player not just to mark Ishiwata’s 40th anniversary, but also to deliver the kind of sound able to bring you closer than ever to your favourite music. The reason is simple, and central to everything Marantz does – “Because music matters”.

At a glance:

  • Engineered and extensively tuned by a team led by Ken Ishiwata, drawing on more than 35 years of Marantz expertise in CD players
  • In-house-developed SACD/CD mechanism “SACDM-3”, designed purely for audio
  • SACD/CD playback, and playback of 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’ upsampling to DSD and filtering
  • Custom-designed 1-bit direct ‘MMM – Conversion’ from DSD to analogue
  • New analogue output stage with Marantz HDAM-SA2 technology and low impedance output
  • Power supply using toroidal transformer
  • Dedicated headphone amplifier with all discrete construction featuring HDAM-SA2
  • Laser-engraved ‘Ken Ishiwata’ signature and Ruby motif, marking Ken Ishiwata’s 40 years with Marantz

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