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Marantz® 2 Channel Integrated Amplifier

At a Glance
Enjoy a fully discrete two-stage design amplifier with separate power supplies for the pre-amplifier and power amplifier for signal purity and exceptional audio quality, every time.
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$3,999.00Save $NaN

Get to know this product.

Built To Perform

Constructed to the highest standards with a copper-plated chasses to reduce mechanical and electrical interference

Masterfully Tuned

Complete with thoughtful engineering, painstaking tuning and extensive listening sessions, PM-KI Ruby achieves the elevated output worthy of its name.

Pure Sound

Built to leverage enhancements, maintain the purest possible sound and supply the power needed to drive the most demanding speakers.

Balanced Power Amplification

Drawing on design elements of the PM-10, the PM-KI Ruby is built to leverage enhancements, maintain the purest possible sound and supply the power needed to drive the most demanding speakers.

Current Feedback Amplifier

Current Feedback amplification is a well-known, Marantz-original circuit technology, thoughtfully designed to match the expectations of your Hi-Res music for wide-bandwidth and ensured high-speed reproduction.

Marantz HDAM Technology

Marantz developed its own discrete circuit boards called Hyper-Dynamic Amplifier Module, or HDAM, to replace the chip-based amps used elsewhere. Using discrete surface mount components with short mirror-image left and right signal paths, the HDAM outperform the regular integrated Op-amps dramatically in Slew Rate and noise level.

Marantz Musical Premium Phono EQ

Designed to deliver optimal sound quality by simplifying the signal path, the Marantz Musical Premium Phono EQ stage in the PM-KI-Ruby amplifier can be used with both moving magnet and low-output moving coil cartridges, thanks to a built-in phono amplifier.

High Quality Volume Control

Newly developed electric volume control uses the latest volume control IC to realize better channel separation, dynamic range and distortion-reduction, while retaining the operational feel of an analog volume control device. The amplifier employs new Marantz-designed electric volume control for high linearity and best-in-class channel

Useful Documents


Current Feedback TopologyYes
Phono EQMarantz Musical Premium Phono EQ
HDAM versionSA3, SA2
Power Transformer: Toroidal / ElYes / No
High Grade Audio ComponentsYes
Customised ComponentsYes
Symmetric PCB LayoutYes
Aluminium extrusion heat sinkYes
Balance / Bass / Treble / LoudnessYes / Yes / Yes / No


Linear Drive Power SupplyYes
Liniear volume controlYes
BI-AMP and Multichannel optionNo
Shottky diodesYes
Input buffer ampNo
System block shielding: Copper / metal / noneYes / No / No
Double Layer Bottom PlateYes
Low noise OLED displayYes
Source DirectYes
Power Amp directYes
Standby ModeYes


Audio InputsYes
Phono Input: MM / MCYes / Yes
Marantz Musical Premium Phono EQYes
Audio Outputs2
Power Amp Direct INYes / No
Cinch input[CD][PHONO]:Thick nickel plated independent terminals Others: Gold plated
Speaker Terminal: Screw / Marantz / WBTNo / Yes /SPKT-100+/ No
Number of terminals2
Floating Control Bus (3.5 mm mono jack x 2)Yes
Headphone OutYes


Power Output (8 / 4 Ohm RMS)100 W / 200 W
Frequency response5 Hz-50 kHz
Total Harmonic Distortion0.01%
Damping Factor500
Input Sensitivity: MM2.3 mV / 39 kOhm
Input Sensitivity: MC250 u V / 100 ohm
Signal to Noise Ratio: MM/MC88 / 75 dB
Input Sensitivity: High level220 mV / 13 kOhm
Signal to Noise Ratio: High level107 dB (2V input)
Input Sensitivity: Power Amp Direct IN1,1V / 13 kohm


Available Colors: Gold / Silver / Black / Silver-GoldNo / No / Yes / No
Aluminum Front PanelYes
Power Consumption in W130 W
Standby Consumption in W0,2 W
Auto Power offYes
Detachable Power CableYes
Remote ControlRC005PMSA
System Remote FunctionYes
Maximum Dimensions (W x D x H) in inches17.32 x 17.83 x 5
Weight in lbs.34.61

Misc. Specs

Depth (in.)17.83
Height (in.)5
Width (in.)17.32
Frequency Response5 Hz-50 kHz
Color Finish NameBlack
Product Weight (lbs.)34.61
Amplifier Channels2
WarningProposition 65 Warning for California Residents