Marantz PM-KI RUBY User Manual

Features
High quality sound
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HDAM
®
SA3 Module
The HDAM
®
SA3 is a key amplifier module for current
feedback amplifiers. It is installed in the voltage to current
converter, the most crucial component, to improve the
stability of the circuit and provide high-speed sound.
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Linear Control Volume
The HDAM
®
SA3 is combined with a JRC volume IC to
achieve low distortion and high S/N. A range of volumes
between 0 and -99.5 dB can be smoothly controlled in ±0.5
dB steps.
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Hypex Switching Power Amplifier Module
The power amplifier contains a Hypex NCore
®
switching
power amplifier module. This switching amplifier module
minimizes distortion from bass to treble and frequency
characteristics are not changed by the impedance of the
speakers, achieving extremely high performance. It can be
used with a high-speed pre-amplifier circuit containing the
HDAM
®
SA3 to faithfully and precisely convey the finely
detailed information in DSD and high-resolution sound
sources.
0
Marantz Musical Premium Phono EQ
The new Marantz Musical Premium Phono EQ phono
equalizer has been developed for MM/MC cartridges to
produce rich sound that is more similar to analog. This
circuit contains a new feedbackless equalizer amplifier and
MC head amplifier developed by HDAM. J-FET input is
used, enabling the input coupling condenser to be
eliminated. This improves the purity of the signal path in
the small signal section.
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High Sound Quality Parts Employed
High sound quality parts are used in every part of the
circuit, including high sound quality MELF resistors and
film capacitors.
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Double-layered chassis
0
High-grade copper machined analog audio input
connectors
(CD/PHONO only)
0
High-grade Machined Copper Speaker Terminals
High performance
0
F.C.B.S.
A Floating Control Bus System (F.C.B.S.) enables the user
to connect up to four PM-KI RUBY units, making a diversity
of applications possible with complete bi-amp and
multichannel connections. Moreover, a ground loop is not
formed among multiple PM-KI RUBY units connected;
therefore, sound quality is not adversely affected.
0
Bi-amp mode
Complete bi-amp connection proposed by Marantz
enables a level of reproduction of the acoustic field never
before achieved. Synchronized operation of two PM-KI
RUBY units is made possible by F.C.B.S. (Floating Control
Bus System) connection, with each PM-KI RUBY in Bi-
Amp mode working as a monaural integrated amplifier.
0
Power Amplifier Mode
In this mode, this unit works as a power amplifier.
0
Tone Control Amplifier
An electronic tone control amplifier is used to adjust the
bass and treble volumes in 1 dB steps within a ±6 dB
range.
ENGLISH
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PrintingColor:Black

Marantz PM-KI RUBY Specifications

General

Type	Integrated Amplifier
Signal to Noise Ratio MC	75 dB
Damping Factor	100
Dimensions	440 x 127 x 453 mm
Frequency Response	5Hz - 50kHz
Total Harmonic Distortion	0.005%
Input Sensitivity MM	2.5 mV / 47 kohm
Input Sensitivity	200 mV / 22 kohm