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Signature Reference Integrated Amplifier

Marantz Canada PMKIRUBY

Quick Specs

  • Type: Amplifier
 
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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.

The amplifier output stage of the PM-KI Ruby allows a large power output, delivering 2x100W into an 8ohm load, and easily copes with high-impedance speakers thanks to a 2x200W output into 4ohms. The amplifier module connects directly to the rear panel PCB on the PM-KI Ruby to maintain signal purity and sound stability.

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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.

The impedance at the Current Feedback point is limited, generating a very low phase shift. Marantz Current Feedback amplifiers reduce the need for phase compensation by minimizing Negative Feedback (NFB). This shortens the signal path and results in a high through-rate, excellent transient response and superb sonic transparency across the full bandwidth. Unlike conventional voltage feedback topology, Current Feedback also makes the power amplifier insensitive to difficult loudspeaker loads.

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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.

The result is a much more dynamic, accurate and detailed sound. Over the years, Marantz has developed different HDAM technology to fit the particular requirements of players and amplifiers. The PM-KI Ruby uses the latest high-grade HDAM-SA3 technology, combined with optimized circuit design layout and carefully selected components, the PM-KI Ruby ensures exceptional sound quality and performance.

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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.

Distortion is reduced by using two-stage amplification in the phono stage, and Marantz HDAM is combined with JFETs (junction gate field effect transistors) in the input stage, giving high input impedance. The exclusion of coupling capacitors further simplifies the design, reducing signal distortion and enhances signal purity.

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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.

Balanced Power Amplification (P)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.(/P) (P)The amplifier output stage of the PM-KI Ruby allows a large power output, delivering 2x100W into an 8ohm load, and easily copes with high-impedance speakers thanks to a 2x200W output into 4ohms. The amplifier module connects directly to the rear panel PCB on the PM-KI Ruby to maintain signal purity and sound stability.(/P)

Current Feedback Amplifier (P)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.(/P) (P)The impedance at the Current Feedback point is limited, generating a very low phase shift. Marantz Current Feedback amplifiers reduce the need for phase compensation by minimizing Negative Feedback (NFB). This shortens the signal path and results in a high through-rate, excellent transient response and superb sonic transparency across the full bandwidth. Unlike conventional voltage feedback topology, Current Feedback also makes the power amplifier insensitive to difficult loudspeaker loads.(/P)

Marantz HDAM Technology (P)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.(/P) (P)The result is a much more dynamic, accurate and detailed sound. Over the years, Marantz has developed different HDAM technology to fit the particular requirements of players and amplifiers. The PM-KI Ruby uses the latest high-grade HDAM-SA3 technology, combined with optimized circuit design layout and carefully selected components, the PM-KI Ruby ensures exceptional sound quality and performance.(/P)

Marantz Musical Premium Phono EQ (P)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.(/P) (P)Distortion is reduced by using two-stage amplification in the phono stage, and Marantz HDAM is combined with JFETs (junction gate field effect transistors) in the input stage, giving high input impedance. The exclusion of coupling capacitors further simplifies the design, reducing signal distortion and enhances signal purity.(/P)

High Quality Volume Control (P)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.(/P)

High Quality Volume Control (P)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.(/P)

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.

Features
Channels 2
Current Feedback Topology Yes
Phono EQ: Marantz Musical Premium Phono EQ
HDAM version SA3, SA2
Power Transformer: Toroidal / El Yes / No
High Grade Audio Components Yes
Customised Components Yes
Symmetric PCB Layout Yes
Aluminium extrusion heat sink Yes
Balance / Bass / Treble / Loudness Yes / Yes / Yes / No
Others
Linear Drive Power Supply Yes
Liniear volume control Yes
BI-AMP and Multichannel option No
Shottky diodes Yes
Input buffer amp No
System block shielding: Copper / metal / none Yes / No / No
Double Layer Bottom Plate Yes
Low noise OLED display Yes
Source Direct Yes
Power Amp direct Yes
Standby Mode Yes
Inputs/Outputs
Audio Inputs 6
Phono Input: MM / MC Yes / Yes
Marantz Musical Premium Phono EQ Yes
Audio Outputs 2
Power Amp Direct IN Yes / No
Cinch input [CD][PHONO]:Thick nickel plated independent terminals Others: Gold plated
Speaker Terminal: Screw / Marantz / WBT No / Yes /SPKT-100+/ No
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-50 kHz
Total Harmonic Distortion 0.01%
Damping Factor 500
Input Sensitivity: MM 2.3 mV / 39 kOhm
Input Sensitivity: MC 250 u V / 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)
Input Sensitivity: Power Amp Direct IN 1,1V / 13 kohm
General
Available Colors: Gold / Silver / Black / Silver-Gold No / No / Yes / No
Aluminum Front Panel Yes
Power Consumption in W 130 W
Standby Consumption in W 0,2 W
Auto Power off Yes
Detachable Power Cable Yes
Remote Control RC005PMSA
System Remote Function Yes
Maximum Dimensions (W x D x H) in inches 17.32 x 17.83 x 5
Weight in lbs. 34.61

Quick Specs


  • Appearance

  • Type: Amplifier

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Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.