Specifications

Superior quality electronic volume control for optimum sound
We’ve utilised a high-quality digital volume
control specially designed by New Japan Radio
Co., Ltd., which consists only of ladder-type
resistance, removing the impact of slew-rate
decline or colouring of the sound, delivering higher
purity in the sound, and excellent, fast response to
large volume changes and steep transients.
Discretely configured phono amp
The phono amp is comprised of an MC
head amp and an equaliser amp, each
of which are discretely configured,
resulting in a rich sound with
pronounced musicality, when playing
vinyl records with both MC and MM
phone cartridges.
MC head ampEQ amp
Original speaker terminals for high sound quality,
as well as beauty and ease of use
The speaker terminals are the final link in the audio chain of this
amplifier, and have also been designed with meticulous obsession. They
are screw-type terminals with large handles featuring an original design,
and have been crafted by cutting pure brass to
enable a secure connection with no reduction
in sound quality. Moreover, the shape
conforms nicely to the human fingers—not
only creating an elegant visual impression, but
also allowing users to turn them easily and to
firmly tighten them with minimal force.
manufacturer. The amplifier with its refined design has been meticulously
finished by the skillful use of advanced processing technologies:
integrating the top panel and side wood connection, leaving no gaps while
using different materials—metal and wood—for the connection.
Remote control with simple design
and superior texture
The supplied remote control features a design
complementary to the aluminium panel of the
amplifier itself, with a simple, easy-to-understand
button layout and gorgeous metallic texture. In
addition to the basic volume adjustment and input
switching controls of the A-S3000, it can also be
used for operation of the companion CD-S3000.
Obsessive, meticulous switch design—
elaborate, richly textured, easy-to-use
Since the controls—the volume dial,
switches, and so on—are the parts of the
amplifier which users actually touch and
feel directly, their surface texture and
design were created with the strictest
attention to detail. Individual controls
such as the volume or input switching
dials, emanate a richly elegant feel
thanks to the use of cut aluminium
knobs. Switches, including the power
switch, were made with obsessive
attention to texture in every detail; they
were shaped with refined craftsmanship
so that when they are raised or lowered,
the gap between the switch and panel
surface is impossible to see.
Exquisite, large level meters reflect the dynamics in the music
The A-S3000 features large level meters on the front panel, giving
a direct visual sense of the dynamics and pulse of the music. These
beautiful meters are softly illuminated by LED, lending a warm,
lamplight look. The meter indicators can, in addition to the VU display,
be switched to peak display, and can be selected according to the user’s
preference. Moreover, the glass window of the meters is diagonally cut
and precision-fit to the back surface of the front panel, leaving no gaps
and using no screws for connection—lending an exceptionally elegant
appearance to the unit.
Meticulously designed and beautiful in appearance—
just like a musical instrument
As befits a top-end audio component, the A-S3000 gives off the presence of
a fine musical instrument, with absolutely no screws or fasteners that can
be seen from the outside. Every single aspect of its construction and design
exudes master craftsmanship and reflects an obsession with quality—a truly
musical quality possible only for Yamaha, a world class musical instrument
Exceptionally low impedance through
secure screw connections
In order to completely eliminate signal energy
loss, important parts of even the circuits employ
screw connections. In addition to wiring of the
block capacitor of the power unit—which is the
real heart of the amplifier and as such requires high
power—screw connections were adopted for all
crucial spots of signal transmission, including the
connection of the pre amp circuit with the power
amp circuit, and the cabling to the speaker terminals from the output stage
of the power amp. In addition to making the signal path as short as possible,
this significantly lowers the impedance, and greatly reduces signal loss.
All-stage balanced transmission
The A-S3000 features fully balanced signal transmission. Moreover, the
control system circuits (volume, tone, etc.) of the pre amp feature totally
balanced operation, realising ideal balance in all stages.
elements with the same polarity on the plus and minus sides of the output
stage, and also completely separating the NFB (Negative Feedback)
circuit and power supply into a total of four plus and minus sides of
the left and right channels, results in thoroughly symmetric push-pull
operation of the output stage, Completely floating the entire power
amp circuit from the ground removes any negative impact of minute
voltage fluctuations or ground noise. Moreover, the output elements
are comprised of MOSFETs, which provide a warm and natural sonic
character. The use of MOSFETs, which have the same polarity on the
plus and minus sides, further evolves the ideal of a complete symmetrical
design, to eliminate sound quality variations due to difference in
polarity—a major distinguishing characteristic of the Floating and
Balanced Power Amplifier—resulting in sound with a superior signal-to-
noise ratio and a superbly well-defined sound field.
Direct drawing toroidal transformer
for complete elimination of signal
transmission loss
The cabling of the power transformer adopts an
ingenious method in order to significantly reduce
impedance. The winding of the transformer itself
is directly connected to the terminal with a screw,
unlike with conventional cabling. This enables a
power supply which thoroughly limits connection loss and energy loss
caused by soldering. The toroidal transformer was selected with top
priority on sound quality, contributing superior strength, as well as a
profoundly natural and spacious sound.
Left-right symmetrical design for independent pre amp
and power amp blocks
The amplifier circuit design features independent pre amp and power amp
blocks, and perfect left-right symmetry. Separation of the pre amp, which
handles low energy signals, from the power amp, which handles high-
energy amplified signals, greatly reduces sound deterioration caused by
mutual interference. Moreover, the left-right symmetrical design, which
keeps the left and right power stages completely separate, ensures greater
channel separation and enhances clarity of the stereo image.
Floating and Balanced Power Amplifier with MOSFETs
The basic design of the power amp circuit adopts Yamaha’s proprietary
Floating and Balanced Power Amplifier technology. Adopting output
A-S3000 Floating and Balanced Power Amplifier
Ground wiringGround wiring
+ –
Feedback Feedback
Floating power supplyFloating power supply
S Signal
+
S Signal
–
Speaker
Symmetrical
MOSFET MOSFET