Marantz PM-KI Ruby Integrated Amplifier - Rapallo New Zealand :: Home Theatre & Hifi | Design & Installation
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Marantz PM-KI Ruby Integrated Amplifier

$8,999.00 inc GST

or from $7,499.00 today & 5 weekly interest-free payments of $300.00 with Laybuy

or from $7,499.00 today & 5 weekly interest-free payments of $300.00 with Laybuy what's this?


Engineer Ken Ishiwata celebrated his 40 years of excellence at Marantz by designing this versatile, elegant, and powerful amplifier.

The Marantz PM-KI Ruby generates 100 watts x 2 channels, and it’s 4-ohm stable, so it can drive a wide range of speakers well. It features a fully discrete two-stage design with separate power supplies for the pre-amplifier and power amp, and the Marantz FCBS (Floating Control Bus System) lets you link and control up to three subordinate Ruby amps in additional zones.

This amp is a dream for analog-loving audiophiles. There are six stereo RCA audio inputs on the back, including a phono input for use with moving coil or moving magnet cartridges. There’s also a switch that lets you choose whether the amp will be used in basic stereo mode, or with a second PM-KI Ruby to bi-amp compatible speakers. The amp’s preamplifier stage provides exceptional sound quality and performance, thanks to proprietary HDAM® SA3 circuitry.

Description

View Owners Manual >> View Quick Start Guide >> View Spec Sheet >>

 

KEY FEATURES

  • Engineered and extensively tuned legendary Marantz sound master Ken Ishiwata and his team, drawing on more than 65 years of Marantz amplifier design knowledge
  • Marantz high-resolution preamplifier stage with proprietary HDAM technology
  • Switching power amplifier design derived from flagship PM-10 amplifier
  • Generous output: 100W + 100W (into 8ohm), 200W + 200W (4ohm)
  • Fully-discrete, two-stage design for signal purity, with separate power supplies for preamp and power amplifier sections to reduce interference
  • Toroidal transformer dedicated to preamp for clarity and powerful sound
  • Current feedback design with newly-developed wide-range circuitry
  • HDAM® SA3 circuitry for clean signal and optimal dynamics
  • MM/MC Phono input with new discrete Marantz Musical Premium Phono EQ circuit
  • Thick nickel-plated copper independent input terminals for CD and Phono, plus Marantz-original high-quality/high-purity copper-plated speaker terminals
  • Linear volume control with new electric volume system
  • High-quality construction with double-layer chassis, 5mm thick aluminum top lid, solid aluminum front and copper-plated chassis
  • High-grade, carefully selected audio parts: ultra-low leak current Schottky diodes, low noise complementary transistors, high-grade resistors, newly developed custom electrolytic capacitors, audio grade film capacitors and mica capacitors.
  • Laser-engraved Ken Ishiwata signature and Ruby motif, marking Ishiwata’s 40-year Marantz legacy

 

Celebrating 40 Years of Passion
Designed to celebrate the 40-year anniversary of legendary Marantz sound master, Ken Ishiwata, PM-KI Ruby features pinnacle performance that’s synonymous with Marantz excellence. Complete with thoughtful engineering, painstaking tuning and extensive listening sessions, PM-KI Ruby achieves the elevated output worthy of its name. Elegantly shows Ishiwata’s laser-engraved signature to commemorate the design and heightened listening experience that honours the decades-long partnership between him and Marantz.

 

Extensive Sound Tuning
Led by Ken Ishiwata’s extensive, meticulous approach to tuning, the larger Marantz engineering team applied more than 65 years of experience and HiFi knowledge to create PM-KI Ruby, resulting in a final product that is a testament to Ken Ishiwata and the Marantz legacy.

 

Marantz HDAM Technology
Marantz developed its own discrete circuit boards called Hyper-Dynamic Amplifier Modules, or HDAMs, to replace the chip-based amps used elsewhere. Using discrete surface mount components with short mirror-image left and right signal paths, HDAMs outperform the regular integrated Op-amps dramatically in Slew Rate and noise level. The result is much more dynamic, accurate and detailed sound. Over the years, Marantz has developed different HDAMs to fit the particular requirements of players and amplifiers. The PM-KI Ruby uses the latest high-grade SA3 version. Combined with optimized circuit design layout and carefully selected components, the PM-KI Ruby provides exceptional sound quality and performance.

 

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 MC head amplifier. Distortion is reduced by using two-stage amplification in the phono stage, and Marantz HDAMs are 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.

 

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 analogue volume control device. The amplifier employs new Marantz-designed electric volume control for high linearity and best-in-class channel separation.

 

Current Feedback Amplifier
Current Feedback amplification is a well-known, Marantz-original circuit technology, thoughtfully designed to match the requirements of Super Audio hi-res music for wide-bandwidth, 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 simplifies 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.

 

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 support 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.

 

Pure Analogue Design
The purely analogue design of the PM-KI Ruby contributes to its noise-reduction structure and clean build. Rather than build the DAC into the amplifier, which would add noise within the chassis, Marantz built the PM-KI Ruby without one and then implemented the DAC in the SA-KI Ruby Super Audio CD Player. This eliminated interference with the delicate analogue signals passing through the amp, maintaining an analogue environment that’s as pure and clean as possible.

 

Carefully Selected Components
Marantz has a steadfast reputation for choosing the best-possible components for its Premium Series products. The Marantz alternative to the “amplifier on a chip” IC components, the HDAM, is a miniature amplifier module built entirely of discrete components. Marantz engineers selected and optimized the HDAM through extensive listening in dedicated Marantz facilities in Europe and Japan. Extensive, painstaking and meticulous tuning has long been the secret of exquisite-sounding Marantz amplifiers. During the development stage, every part is carefully selected, tested and validated by Marantz audio engineers to ensure audio perfection every time you listen.

 

Multiple Analogue Inputs and Outputs
In addition to phono and CD analogue inputs, the PM-KI Ruby features two line-level inputs and two pairs of recorder input/output jacks that enable the connection of multiple sources and recorders. Use the PM-KI Ruby as a standalone stereo power amplifier for additional system configuration versatility with the included power amp input, or connect the PM-KI Ruby to an external power amplifier via the stereo pre-amp outputs.

 

Dedicated Headphone Output
Using Marantz-proprietary HDAM discrete modules, the headphone circuit delivers superb audio fidelity with the widest range of headphone types and impedances, including low impedance headphones.

 

System Remote Control
Use the elegant remote control to operate the PM-KI Ruby as well as the complementary SA-KI Ruby Super Audio CD Player. The PM-KI Ruby features remote control input and output jacks for additional remote control configuration flexibility.

 

Built to Perform
Like the complementary SA-KI Ruby Super Audio CD player, the PM-KI Ruby integrated amplifier is constructed to the highest standards with a copper-plated chasses to reduce mechanical and electrical interference. A front panel constructed from thick, heavy, non-magnetic aluminum panels and an 5mm dense aluminum top cover eliminate added interference. Nickel-plated copper independent input terminals for CD and Phono plus Marantz-original high-quality/high-purity copper-plated speaker terminals ensure the best signal possible.

 

SPECIFICATIONS

Performance Specs
Watts RMS per Channel (8-ohms) 100
Watts RMS per Channel (6-ohms) Not given
Watts RMS per Channel (4-ohms) 200
Frequency Bandwidth 5-50k
THD 0.01%
Minimum Impedance 4 ohms
Signal to Noise Ratio 107
Digital Music Features
Built-in DAC (Digital to Analog Converter) No
High-resolution Audio Playback No
Bluetooth No
Wi-Fi N/A
Connections
Total Analog Inputs 5
Phono Input Yes
Optical Digital Inputs No
Coaxial Digital Inputs No
USB Input No
Preamp Outputs No
Headphone Output 1/4″
Dimensions and Warranty
Maximum Dimensions (W x D x H) in mm 440 x 453 x 127
Weight in kg 15.7

Additional information

Weight 15.7 kg
Dimensions 44 × 45.3 × 12.7 cm
Brand

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The Internet is an incredibly convenient information source and a wonderful way to find savings on the products you want. Protect yourself online by buying from authorized dealers, with genuine feedback and reputations.

A price too good to be true, usually is.
If you’ve ever searched for a product on a shopping engine (such as Priceme/Pricespy) you may have asked yourself, “Why are some stores charging so much less than other stores?”

Our customers often share these stories with us, so we thought we would share a few with you, in hopes that you don’t fall prey to any of these unscrupulous sales tactics.

  • Goods may be grey market/parallel imported. They may state that the product includes the manufacturer warranty, but not tell you that the warranty is valid only in Europe, Japan, or South America, and NOT in NZ.
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Think you have a better price from someone in NZ (authorised dealer)? Call us, we’ll see what we can do.

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Concerned About Fraud?

The internet has become a more popular source for online shopping, regrettably we have seen more and more instances of fraud affecting online shoppers. Companies trading under many  different names, loading warranties and charging for them as extras when often they are included from the manufacturer. Parallel imports or personal imports where the NZ supplier refuses to repair when things go wrong is often alarming to the unsuspecting purchaser. Inflated freight charges, customs and GST at the border are often forgotten as a buyer is tempted by a lower price. Constantly we hear all these stories, once bitten it’s all to late looking for that refund or replacement. The stories are outrageous at times, customers from Trademe and ebay with no place to turn, time consuming and very frustrating….

So how do you protect yourself from online fraud?

  • Buy from an authorized reseller. If you are at all suspicious, contact the manufacturer directly and ask if a company is authorized to sell their products.
  • Make sure you get a company invoice with GST clearly marked.
  • Make sure you buy from someone who has a phone number and an address on their website, not a P.O.Box number
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We hope that you will become our next happy customer. And we promise to offer you superior service before, during and after your purchase.

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