Featuring balanced power amplification, Marantz-original circuit technology, and Marantz HDAM technology.
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
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Built to perform
Constructed to the highest standards with a copper-plated chasses to reduce mechanical and electrical interference
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Masterfully tuned
Complete with thoughtful engineering, painstaking tuning and extensive listening sessions, PM-KI Ruby achieves the elevated output worthy of its name.
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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.
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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
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Technical Specifications
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
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Customer Review
PM-KI Ruby Support Materials
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