Marantz PM-KI Ruby


PM-KI Ruby er en jubileumsmodell som er utviklet i forbindelse med at Marantz’ legendariske sjefsdesigner Ken Ishiwata feirer 40 år i selskapet. Forsterkeren låner teknologi fra toppmodellen PM-10 og kommer med en innfelt rød rubin og Kens signatur gravert på toppen.

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Celebrating 40 Years of Skill and Passion.

For his 40 years ruby anniversary at Marantz, Ken Ishiwata and his daring team crafted these two audiophile gemstones with hand-selected and custom-made components to carry all the emotions of music. The KI Ruby Series is precision-made and virtuously tuned to deliver the most enjoyable sound to amplify your senses.

• Collector‘s item
• Individually numbered
• Limited to 1.000 sets


The PM-KI Ruby 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 amplifier 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

Dedicated headphone amplifier with alldiscrete construction featuring HDAM-SA2

Linear volume control with new electric volume system

Laser-engraved ‘Ken Ishiwata’ signature and Ruby motif, marking Ken Ishiwata’s 40 years with Marantz

Les mer på Marantz sin hjemmeside



Channels 2
Current Feedback Topology •
Phono EQ Marantz Musical Premium Phono EQ
HDAM version SA3, SA2
Power Transformer Toroidal and SMPS
High Grade Audio Components •
Customised Components •
Symmetric PCB Layout •
Aluminium extrusion heat sink • (Separate)
Copper plated chassis •
Audio Inputs/Outputs 6 / 2
Phono Input: MM / MC • / •
Power Amp IN •
Gold Plated Cinch • / CD and Phono nickle-plated
Speaker Terminals: Marantz SPKT-100+
Number of terminals 2
D-Bus •
Floating Control Bus (3.5 mm mono jack x 2) •
Headphone Out •
Power Output (8 / 4 Ohm RMS) 100W / 200W
Frequency Response 5 Hz – 50 kHz
Total Harmonic Distortion 0.005 %
Damping Factor 500
Input Sensitivity: MM 2.3 mV / 39 kohm
Input Sensitivity: MC 250 µV / 100 ohm
Signal to Noise Ratio: MM/MC 88 / 75 dB
Input Sensitivity: High level 220 mV / 13 kohm
Signal to Noise Ratio: High level 107 dB (2V input/rated output)
Input Sensitivity: Power Amp Direct IN 1.1 V / 13 kohm
Linear Drive Power Supply • (pre-amplifier stage)
Liniear volume control •
Bi-AMP and Multichannel option •
Schottky diodes •
Double Layer Bottom Plate •
OLED LCD display •
5mm aluminium top plate •
Available colours: Gold / Black
Metal Front Panel •
Power Consumption in W 130
Standby Consumption in W 0.2
Auto Power off •
Detachable Power Cable •
Remote Control RC005PMSA
System Remote Function •
Maximum Dimensions (W x D x H) in mm 440 x 453 x 127
Weight 15.7kg