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Marantz PM-KI RUBY Reference Integrated Amplifier

by Marantz
UPC: 699927031756


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Marantz PM-KI RUBY Reference Integrated Amplifier

Marantz has been designing and making amplifiers for more than 65 years, and for 40 of those years the products have reflected expertise of Ken Ishiwata. To mark his four decades with the company, the PM-KI Ruby amplifier has been developed and tuned by a highly experienced engineering team led by KI himself. Features a fully discrete two-stage design with separate power supplies for the pre- amplifer 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.


• Engineered and extensively tuned legendary Marantz sound master Ken Ishiwata and his team, drawing on more than 65 years of Marantz amplifier design knowledge
• 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


Channels 2
Current Feedback Topology •
Full balanced amplifier circuitry architecture -
Power Transformer Toroidal and SMPS
HDAM version SA3, SA2 Symmetric PCB layout •
High Grade Audio Components •
Customized Components •
Aluminum extrusion heat sink •


Phono Input MM/MC Marantz Musical Premium Phono EQ
Audio Inputs / Outputs 6 / 2
Cinch inputs [CD][PHONO]:Thick nickel plated independent terminals Others: Gold plated
Balanced In / Out - / -
Power Amp IN •
Speaker Terminals Marantz SPKT-100+
Number of terminals 4
Remote Control Bus Terminal (In / Out) 1 / 1 (cinch)
Headphone Out •


Power Output (8 / 4 ohms) 100 W / 200 W
Frequency Response 5Hz - 50kHz
Total Harmonic Distortion 0.005% (1kHz, 8Ω)
Damping Factor 500
Input Sensitivity: Phono input MM: 2.3 mV / 39 kohm MC: 250 µV / 100 ohm
Signal to Noise Ratio: inputs PHONO (MM): 88dB PHONO (MC): 75dB CD: 107dB
Input Sensitivity: CD/LINE/RECORDER 220 mV / 13 kohm
Input Sensitivity: Power Amp In 1.1 V / 13 kohm
Bass / Treble / Balance Control • / • / •
Source Direct •


Bi-AMP and Multichannel option •
Schottky diodes •
Input buffer amp all inputs -
System block shielding: Copper / metal / none • / - / -
Double Layer Bottom Plate •
Low noise display • (OLED)


Front Panel Aluminum
Volume Knob Aluminum
Input Selector Aluminum
Chassis Copper Plated
Top panel Aluminum
Feet Aluminum diecast
Volume control Electric
Power Consumption in W 130W
Standby Consumption in W 0.2W
Auto Power off •
Detachable Power Cable •
Remote Control RC005PMSA
Maximum Dimensions (W x D x H) 17.32” x 5.00” 17.83”
Net Weight 34 lbs 10 oz
Packaging Dimensions (W x H x D) 22” x 9 5/8” x 21 1/8”
Gross Weight 41 lbs 7 oz

UPC SAKIRUBY/U1B Black 699927031756