Marantz PM-KI Ruby Integrated Amplifier (927/999)

Why Buy New is pleased to offer for sale this fantastic Marantz PM-KI Ruby Integrated Amplifier.

It comes in the original box and packaging and includes a power cable and remote control.

This has been tested and is in full working order. It is sold with our own 3 month warranty.

The cosmetic condition is excellent. There are a few minor marks. There is a small area of corrosion on the bottom left of the rear panel. Please see the condition in the images.

FREE national courier delivery.

Why Buy... from us?
Because all of our items go through a full inspection, get serviced (if required), PAT tested for electrical safety, deep cleaned and all come with a warranty. We are 100% committed to customer care and are always on hand pre or post-delivery for technical help and advice.

Marantz PM-KI RUBY Integrated Amplifier

Engineered with premium components and innovative technologies, the Marantz PM-KI RUBY delivers detailed, high-fidelity sound, especially for audiophiles and high-resolution music enthusiasts. From its HDAM® SA3 module to its Hypex NCore® switching amplifier module, this amplifier combines power, precision, and quality to elevate any listening experience.

Key Features

• HDAM® SA3 Module: Installed in the voltage-to-current converter, enhances circuit stability, and delivers high-speed, accurate sound for current feedback amplifiers.
• Linear Control Volume: Paired with a JRC volume IC for smooth volume adjustments (0 to -99.5 dB) in ±0.5 dB steps, maintaining low distortion and high signal-to-noise ratio.
• Hypex NCore® Switching Power Amplifier Module: Ensures minimal distortion across frequencies; maintains consistent sound quality regardless of speaker impedance.
• Marantz Musical Premium Phono EQ: Specifically developed for MM/MC cartridges, this feedbackless equaliser offers rich, analogue-like sound. J-FET input eliminates coupling capacitors to enhance signal purity.
• High-Quality Components: Premium parts, including MELF resistors and film capacitors, are used throughout the circuit for exceptional sound quality.
• Double-Layered Chassis & Machined Copper Terminals: High-grade copper audio input connectors (CD/PHONO only) and speaker terminals ensure stable connections and reduce noise interference.
• Floating Control Bus System (F.C.B.S.): Connect up to four PM-KI RUBY units for flexible configurations, including full bi-amp and multichannel setups, while avoiding ground loop interference.
• Bi-Amp Mode: Achieves superior acoustic field reproduction by synchronising two units in bi-amp mode, each operating as a monaural amplifier.

Technical Specifications

Power Output

• 8 Ohms (1 kHz, THD 0.05%): 100W x 2
• 4 Ohms (1 kHz, THD 0.1%): 200W x 2

Total Harmonic Distortion

• 8 Ohms (1 kHz, 100W): 0.005%

Frequency Response

• CD, 1W, 8 Ohms: 5 Hz – 50 kHz, ±3 dB

Damping Factor

• 8 Ohms (20 Hz – 20 kHz): 500

Input Sensitivity / Impedance

• Phono (MC): 250 μV / 100 Ohms
• Phono (MM): 2.3 mV / 39 kΩ
• CD/Line/Recorder: 220 mV / 13 kΩ
• Power Amp: 1.1 V / 13 kΩ

Max Phono Input Level (1 kHz)

• MC: 8 mV
• MM: 80 mV

RIAA Deviation

• 20 Hz – 20 kHz: ±0.5 dB

Signal-to-Noise Ratio (IHF-A, 8 Ohms)

• Phono (MC): 75 dB (0.5 mV Input)
• Phono (MM): 88 dB (5 mV Input)
• CD/Line/Recorder: 107 dB (Rated Output)

Tone Control

• Bass (50 Hz): ±6 dB
• Treble (20 kHz): ±6 dB

Power Supply

• Voltage: AC 230 V, 50/60 Hz
• Power Consumption: 130W (0.2W in standby mode)

The Marantz PM-KI RUBY is crafted for those who seek high-end audio with sophisticated amplification, reliable connectivity, and cutting-edge design.