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This signature amplifier features a fully discrete two-stage design with separate power supplies for the pre-amplifier and power amplifier.

Premium audio purity, reimagined

Key Features

  • 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.

FULL SPECIFICATION

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.

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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.

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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.

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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 separation.

All the details

Detail View Back Panel

  • Technical Specifications

    DOWNLOAD INFO SHEET

    Features

    Channels 2
    Current Feedback Topology Yes
    Phono EQ: Standard / Marantz Musical / Marantz Musical Premium No / No / Yes
    HDAM version SA3, SA2
    Power Transformer: Toroidal / El Yes
    High Grade Audio Components Yes
    Customised Components Yes
    Symmetric PCB Layout Yes
    Aluminium extrusion heat sink Yes (Separate)
    Copper Plated Chassis Yes
    Balance / Bass / Treble / Loudness Yes / Yes / Yes / No

    Others

    Linear Drive Power Supply Yes (pre-amplifier stage)
    Liniear volume control Yes
    BI-AMP and Multichannel option Yes
    Shottky diodes Yes
    System block shielding: Copper / metal / none Yes / No / No
    Double Layer Bottom Plate Yes
    Low Noise OELD display Yes
    5mm aluminium top plate Yes

    Inputs/Outputs

    Audio Inputs 6
    Phono Input: MM / MC Yes / Yes
    Audio Outputs 2
    Power Amp Direct IN Yes
    Gold Plated Cinch Yes / CD & Phono nickel-plated
    Speaker Terminals Marantz SPKT-100+
    Number of terminals 2
    D-Bus Yes
    Floating Control Bus (3.5 mm mono jack x 2) Yes
    Headphone Out Yes

    Specifications

    Power Output (8 / 4 Ohm RMS) 100 W / 200 W
    Frequency response 5 Hz - 50kHz
    Total Harmonic Distortion 0.01%
    Damping Factor 500
    Input Sensitivity: MM 2.3 mV / 39 kohm
    Input Sensitivity: MC 250
    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)

    General

    Available Colors: Gold / Silver / Black / Silver-Gold Yes / No / Yes / No
    Metal Front Panel Yes
    Power Consumption in W 130
    Standby Consumption in W 0.2
    Auto Power off Yes
    Detachable Power Cable Yes
    Remote Control RC005PMSA
    System Remote Function Yes
    Maximum Dimensions (W x D x H) in mm 440 x 453 x 127
    Weight in kg 15.7

  • Customer Review

PM-KI Ruby Support Materials

Marantz. Born in New York

Marantz was founded in New York by the legendary acoustic expert Saul Marantz. Discover the history and heritage that lives to this day.

Incredible materials, incredible sound - a turntable crafted with rare care and distinction Incredible materials, incredible sound - a turntable crafted with rare care and distinction

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