PMA-655R - Audiogamma

N E W
M O D E L
I N F O R M A T I O N
Integrated Amplifier
PMA-655R
An Integrated Amp with HC Single Push-Pull Circuit, Combining
Delicate Musical Details and Rock-Solid Power
The PMA-655R is an integrated amplifier specially designed to reproduce the remarkably clean sound of next-generation DVD-Audio
and SACD sources, as well as existing CDs and analog records. This elegant component gives you the best of two worlds: A high-speed,
large-current power circuit ensures a rock-stable supply of power, and an HC single push-pull circuit delivers a powerful sound while
preserving the beautiful details of music. The PMA-655R's careful attention to sound quality also features an inert gas relay for switching
between CD and PHONO inputs, and redesigned volume, tone, and power circuits to further suppress noise and expand the frequencyband. The PMA-655R is a superior all-round integrated amp, ideal for today's growing choices of high-quality audio entertainment.
High-Current (HC) Single Push-Pull Circuit Combining
Delicate Musical Details and Rock-Solid Power
Inheriting the concept of the UHC Single Push-Pull circuit that was
incorporated in the S-Series and earned high acclaim for the richness
of its expressive power, the HC Single Push-Pull circuit was developed to bring out the maximum potential of the PMA-655R integrated
amplifier. Delicate nuances of the music and reliable stability of power
have finally been combined to open a completely new dimension in
sonic experience. Serious and budding audiophiles alike can enjoy the
music directly as artistic expression and savor the artist’s original
involvement.
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HC-Transistor, for Rich, Expressive Sound
The HC-transistor, boasting superior electric current supply capability
and double the capacity of normal transistors to handle peak levels of
electric current, was developed in order to endow the PMA-655R with
high-end audio performance. The dramatic improvement in musical
expression is easily audible.
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High-Speed, High-Capacity Power Supply Circuit
A fast recovery diode featuring both rapid response and superior
power supply capability has been employed in the rectifier circuit so
that the HC Single Push-Pull circuit can work at its maximum potential.
Combined with the large-capacity smoothing block condenser
designed for high sound quality, a highly stable power supply ensures
that the musical expression is always clear and realistic.
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Independent Power Transformer for Microprocessor
Separate power transformers are used for the microprocessor circuitry
and the audio circuitry in order to minimize power consumption during
remote power OFF standby mode and promote environmentally friendly
performance. Not only is power consumption reduced during standby,
sound quality is improved as well by eliminating noise-inducing interference on the audio circuitry.
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Microprocessor Stop Mode to Further Improve Sound Quality
When control by the microprocessor is not needed during listening
sessions or other times, the Microprocessor Stop mode suspends all
microprocessor operations. During normal listening sessions, microprocessor clock oscillation stops and adverse effects of noise on the
audio signal are eliminated to produce a cleaner sound.
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Every Detail of The Design Devoted to High-Quality Sound
The relay switch used for CD and PHONO input contains an inert
gas to prevent the occurrence of noise that can negatively affect the
signal. In addition, highly reliable parts strictly selected for their
contribution to sound quality, such as the large-capacity block
capacitor for the power supply circuit, high-quality sound carbon
resistors, and high-quality sound capacitors, are also used. Each
individual part employed in configuring the circuits reflect this
emphasis on high sound quality.
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Circuit Design Devoted to Full Musical Enjoyment
The design of the PMA-655R’s audio circuitry features a simple signal
line layout to ensure that the signal remains pure, a Tone control to
adjust sound quality as desired, and a Source Direct switch to route the
signal over the shortest distance from input to output, providing the most
faithful reproduction of the recorded music.
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N E W
M O D E L
PMA-655R
I N F O R M A T I O N
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Supports A Wide Variety of Next-Generation Sound Sources
The volume and tone controls and the power amp circuit have been
redesigned to further suppress noise inside the amp, provide greater
resolution, and expand the frequency band so that the tremendous
dynamism of DVD-Audio, SACD, and other next-generation audio will
come alive.
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REC OUT Selector for Flexible Enjoyment of Music
Background recording, such as from a CD to an MD while listening to
the radio, is possible with the PMA-655R’s REC OUT Selector.
Monitoring is also possible with any deck containing 3 heads.
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PHONO Equalizer Amp (MM), Permitting Connection of An
Analog Turntable
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A Wealth of Input and Output Terminals That Flexibly
Accommodate The Building of A Custom System
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Versatile System-Wide Remote Controller
The remote controller provided with the PMA-655R controls the
main volume, switches functions, mutes the sound, and operates
remote power ON/OFF. Since this is a system-wide commander, it
can be used to control a DENON CD player, MD recorder, tuner, and
cassette deck as well.
PRE OUT Terminals for Future System Expansion
The PMA-655R is equipped with PRE OUT terminals that permit a
variety of possibilities for future system expansion, such as using the
integrated amp as a power amp with high output power, or adding a
super woofer.
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*Black version is available.
Specifications
Power Amp Section
Rated output, both channels driven ............. 50 W + 50 W
(8 ohms, 20 - 20 kHz, 0.07%THD)
85 W + 85 W
(4 ohms, 1 kHz, 0.7%THD)
■ Preamplifier Section
Input sensitivity/impedance
PHONO (MM)......................................... 2.5 mV/47 kΩ
CD, TUNER, DVD/AUX, TAPE-1/DAT,
TAPE-2/MD, PRE OUT .......................... 150 mV/47 kΩ
RIAA deviation ............................................. 20 Hz - 20 kHz ±0.5 dB (MM)
Frequency response .................................... 5 Hz - 100 kHz (0, -3 dB)
■ General Characteristics
S/N ratio (A network)
PHONO (MM)......................................... 86 dB (5 mV input)
CD, TUNER, DVD/AUX.......................... 107 dB (input terminals shorted / Source Direct ON)
Tone controls ............................................... 100 Hz ±8 dB (BASS), 10 kHz ±8 dB (TREBLE)
Loudness ..................................................... 100 Hz +6 dB, 10 kHz +6 dB
■ Other Specifications
Power supply ............................................... 230 V, 50 Hz
Power consumption ..................................... 185 W
Dimensions .................................................. 434 (W) x 120 (H) x 338 (D) mm
Weight.......................................................... 7.0 kg
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*Design and specifications are subject to change without notice.
NIPPON COLUMBIA CO., LTD.
14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011, JAPAN
http://www.denon.co.jp
24940300B B