Marantz PM7001 - Manual (Page 7)

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ENGLISH
The PM7001 is an integrated amplifier developed on the design
concepts of Marantz’s PM-11S1 high-end model amplifier.
• CD Direct Buffer Amplifier
The PM7001 incorporates a specialized input buffer amplifier
nearby the CD input jack. This buffer amplifier faithfully transmits
the CD input jack signal by preventing interference from
between the left and right channels, and from the effects of
other circuits. A discrete configuration high-speed buffer
amplifier which is built on the HDAM
® SA technology is
incorporated into the buffer amplifier circuit.
• CD Direct Selector
The output of CD direct buffer amplifier has a specialized relay
switch, which directly transmits the input signal by the shortest
path to the pre-amplifier.
• Improved Momentary-Current Supply
Capability
It is known that sound quality differs between amplifiers that
use the same spec, and Marantz believes that this is caused
by differences in speaker drive capability. The PM7001 main-
amplifier has the capability to momentarily pass 25 amperes
or more of current, providing high-powered drive to the
speakers.
• Short Power Line Layout
In order to improve the momentary-current supply capability,
a new layout which places priority on making the large current
line connections as short as possible was adopted.
In this layout the power supply circuit, main-amplifier output
stage, and heatsink are unified, and the large current line is
arranged to be as short as possible while still achieving
symmetry on the left and right sides.
• Current Feedback Amplifier
Both pre-amplifier and main-amplifier incorporate a high-speed
current feedback amplifier circuit, which faithfully amplify
signals from the CD player. Moreover, the high-speed current
feedback amplifier reproduces a natural sound field space.
FEATURES
PM7001 KI Version Features
Compared to the PM7001, the PM7001 KI version contains
the following upgrades.
• Current Feedback PHONO Equalizer
A high-speed current feedback circuit similar to the pre-amplifier
and main-amplifier circuits was adopted in the PHONO
equalizer for the MM cartridge.
• Newly Developed Toroidal Transformer
A newly developed Toroidal power transformer, which produces
less vibration and magnetic leakage flux than previously, has
been incorporated. The materials and manufacturing process
of the ring-shaped core are strictly controlled to reduce
vibration, while the short-ring attached to the perimeter of the
transformer reduce magnetic leakage flux.
• High Performance Volume
The volume controller, which is often considered to be the core
function of an amplifier, has been upgraded to an even more
reliable type of controller.
• Large Capacitance Block Capacitor
A large capacity 18000 µF block capacitor is incorporated into
the main-amplifier power supply circuit.
• Film capacitors and electrolical
capacitors etc.
The capacitors used in high end models like the PM-11S1 are
incorporated into the PM7001 amplifier.
• Copper-coated Chassis
MUTE MUTE
RECORDER RECORDER 2 2 1 1 AUX/DVD AUX/DVD TUNER TUNER PHONO PHONO CD CD
STANDBY STANDBY
SPEAKERS SPEAKERS
OFF OFF ON ON
INTEGRATED AMPLIFIER PM7001 INTEGRATED AMPLIFIER PM7001
TREBLE TREBLE BALANCE BALANCE
POWER ON/OFF POWER ON/OFF PHONES PHONES
BASS BASS
RECORDER2 RECORDER2
INPUT SELECTOR INPUT SELECTOR
R R L L
VOLUME VOLUME
+ + - - + + - - 1 2 1 2
2 1 2 1 RECORDER RECORDER
TUNER TUNER
PHONO PHONO
MAX MAX MIN MIN
1 1 SOURCE DIRECT SOURCE DIRECT 2 2
COPY COPY
OFF OFF REC SELECTOR REC SELECTOR
CD CD
AUX/DVD AUX/DVD
ON ON
OFF OFF
05.7.20, 3:45 PM Page 2