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Marantz PM-Ki Ruby

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Daniel F. Maggi
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Marantz PM-KI Ruby The most musical sound The PM-KI Ruby was developed on the occasion... more

Marantz PM-KI Ruby

The most musical sound

The PM-KI Ruby was developed on the occasion of the 40th anniversary of the legendary Marantz sound master Ken Ishiwata and is characterized by a top performance for which Marantz is known. Thanks to sophisticated technology, careful tuning and extensive listening sessions, the PM-KI Ruby achieves the high performance that lives up to its name.

Balanced power amplification

The amplifier output stage of the PM-KI Ruby is based on the design of Marantz's flagship full amplifier PM-10 and delivers 100 watts per channel to 8-ohm speakers or 200 watts per channel to 4-ohm speakers. For superior quality, the audio signal path consists entirely of discrete components.

Pure analog design

The purely analog design of the PM-KI Ruby contributes to its noise-reducing structure and clean construction. Instead of integrating the DAC in the amplifier, which would amplify the noise in the chassis, Marantz implemented the DAC in the SA-KI Ruby. This keeps the analog environment as clean and clean as possible.

Marantz HDAM Technology

Marantz developed its own discrete amplifier modules, so-called Hyper Dynamic Amplifier Modules (HDAMs), which replace the usual chip-based amplifiers. HDAMs significantly outperform regular integrated operational amplifiers in terms of slew rate and noise levels, resulting in a much more dynamic, accurate and detailed sound. PM-KI Ruby uses the latest generation of HDAM SA3

Marantz Musical Premium Phono EQ

The Marantz Musical Premium Phono EQ stage of the PM-KI amplifier delivers optimum sound quality by simplifying the signal path and can be used with both MC and MM pickups. To minimize distortion, the two-stage amplification combines Marantz HDAMs with JFETs (junction gate field effect transistors) in the input stage to provide a high input impedance.

The premium design

Like the SA-KI Ruby Super Audio CD player, the PM-KI Ruby integrated amplifier is designed to meet the highest demands. The high-quality, vibratition-resistant construction includes a double-walled, copper-plated chassis, a 5 mm thick aluminium top cover and a robust aluminium front as well as solid insulators.

Technical data

  • Channels: 2
  • Current feedback technology: o
  • Phono EQ: Standard / Marantz Musical / Marantz Musical Premium: - / - / o
  • HDAM version: SA3, SA2
  • Power supply: toroidal core / EI: SMPS
  • High-quality audio components: o
  • Selected components: o
  • Symmetrical board layout: o
  • Extruded aluminium heat sink: o (Separate)
  • Copper coated chassis: o
  • Balance / Bass / Treble / Loudness: o / o / o / - -
  • Linear power supply: o (pre-amplifier stage)
  • Linear volume control: o
  • BI-AMP and multi-channel option: o
  • Shottky diodes: o
  • Shielding of the system block: copper / metal / none: o / - / - -
  • Double-layer base plate: o
  • Low Noise OELD display: o
  • 5mm aluminium top cover: o
  • Audio Inputs: 6
  • Phono input: MM / MC: o / o
  • Audio Outputs: 2
  • Power Amp Direct Input: o
  • Cinch, gold plated: o / CD & Phono nickel-plated
  • Speaker Terminals: Marantz SPKT-100+
  • Number of connections: 2
  • Marantz remote control bus: o
  • Bus system with integral control (2 x 3.5 mm mono jack): o
  • Headphone output: o
  • Output power (8 / 4 Ohm RMS): 100 W / 200 W
  • Frequency response: 5 Hz - 50kHz
  • Total harmonic distortion factor: 0.005%
  • Damping factor: 500
  • Input sensitivity: MM 2.3 mV / 39 kohm
  • Input sensitivity: MC 250 µV / 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/Rated output)
  • Available colors: Gold / Silver / Black / Silver-Gold: o / - / o / - -
  • Metal front: o
  • Power consumption in W: 130
  • Standby power consumption in W: 0.2
  • Automatic switch-off: o
  • Replaceable power cable: o
  • Remote control: RC005PMSA
  • System remote control: o
  • Maximum dimensions (W x D x H) in mm: 440 x 453 x 127
  • Weight in kg: 15.7


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