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.
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: Standard / Marantz Musical / Marantz Musical Premium||No / No / Yes|
|HDAM version||SA3, SA2|
|Power Transformer: Toroidal / El||Yes|
|High Grade Audio Components||Yes|
|Symmetric PCB Layout||Yes|
|Aluminium extrusion heat sink||Yes (Separate)|
|Copper Plated Chassis||Yes|
|Balance / Bass / Treble / Loudness||Yes / Yes / Yes / No|
|Linear Drive Power Supply||Yes (pre-amplifier stage)|
|Liniear volume control||Yes|
|BI-AMP and Multichannel option||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|
|Phono Input: MM / MC||Yes / Yes|
|Power Amp Direct IN||Yes|
|Gold Plated Cinch||Yes / CD & Phono nickel-plated|
|Speaker Terminals||Marantz SPKT-100+|
|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 - 50kHz|
|Total Harmonic Distortion||0.01%|
|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)|
|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|
|System Remote Function||Yes|
|Maximum Dimensions (W x D x H) in mm||440 x 453 x 127|
|Weight in kg||15.7|
Founded in NY by legendary sound master - Saul Marantz.Discover
Explore the design story and influences of Marantz.Discover
See Marantz, hear perfection.Discover
Bringing people closer to the music since 1953.Discover
Discover hidden treasures in music with playlists curated by a select group of artists, producers, and tastemakers.
While the 60s is an oft recognized archetypal decade, few time periods have shaped our modern world as powerfully as the 1980s, especially the early part.
Marantz high-fidelity collections, master-crafted for a flawless and personalized listening experience.
Search by address or area to find
a retailer selling Marantz near you
We’ll be in contact soon - check your inbox!