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
Constructed to the highest standards with a copper-plated chasses to reduce mechanical and electrical interference
Complete with thoughtful engineering, painstaking tuning and extensive listening sessions, PM-KI Ruby achieves the elevated output worthy of its name.
Built to leverage enhancements, maintain the purest possible sound and supply the power needed to drive the most demanding speakers.
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.Learn More
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.
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.Learn More
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.
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.Learn More
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.
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.Learn More
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.
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.
|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|
|Symmetric PCB Layout||Yes|
|Aluminium extrusion heat sink||Yes|
|Balance / Bass / Treble / Loudness||Yes / Yes / Yes / No|
|Linear Drive Power Supply||Yes|
|Liniear volume control||Yes|
|BI-AMP and Multichannel option||No|
|Input buffer amp||No|
|System block shielding: Copper / metal / none||Yes / No / No|
|Double Layer Bottom Plate||Yes|
|Low noise OLED display||Yes|
|Power Amp direct||Yes|
|Phono Input: MM / MC||Yes / Yes|
|Marantz Musical Premium Phono EQ||Yes|
|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|
|Floating Control Bus (3.5 mm mono jack x 2)||Yes|
|Power Output (8 / 4 Ohm RMS)||100 W / 200 W|
|Frequency response||5 Hz-50 kHz|
|Total Harmonic Distortion||0.01%|
|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|
|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|
|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|
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