Fully Balanced Control Amp
To achieve fully balanced transmission, all
audio circuits except for the phono equalizer
are balanced. The line amp also uses a
balanced configuration for its volume and
tone circuits, achieving fully balanced
transmission from the XLR balanced input jack
to just before the speaker jack. Additionally,
the output from the unbalanced RCA input
and phono equalizer undergoes balance
conversion internally.
Parallel Volume and Tone Controls
To ensure ideal fully balanced operation, the
volume and tone control systems must be
extremely precise. Conventional analogue
volume systems suffer from gang error, and
cannot achieve sufficient accuracy, even when
using high precision parts. Therefore, for the
A-S2000 we developed a unique method:
canceling out slight precision differences by
the parallel operation of three high sound
quality digital volume ICs for each channel
and operating the system with an analogue
encoder. When using the bass and treble tone
controls, each of the three volume elements is
applied in succession, and during tone default,
three equivalent volume elements for each
channel are used for volume adjustment. This
ensures the best sound quality during both
tone control and default operation.
Power Supply
The A-S2000 has four large capacity power
supplies for the power amp that are
completely isolated from ground. Shunt type
local regulators that prevent degradation of
sound quality by amperage fluctuation ensure a
clean and stable power supply for the preamp.
Naturally, parts that directly affect sound
quality such as the large power supply
transformer and carbon sheath block capacitors
were chosen only after careful evaluation.
Symmetrical Construction
The A-S2000 has a completely symmetrical
construction intended to achieve the ultimate in
integrated amp left-right separation, equal to
that of separate amps. A central reinforcing bar
ensures that the chassis is rigid and stable.
Specially Designed Feet
The extra-heavy feet provide a choice of two
bases. You can leave the round, flat neodymium
magnets in place or remove them to rest the
amplifier on four single points. The feet are also
height adjustable.
They ensure
stability on any
surface, with
superior vibration
damping.
Headphone Amp for Low
Impedance Drive
The fully discrete, high performance headphone
amp is compatible with low impedance drive. Its
pure and powerful sound quality is best
appreciated with high quality headphones.
Discrete Phono Amp
An extremely low-noise phono amp plus a
dedicated MC head amp ensure excellent
musical clarity and imaging with both MC and
MM phono cartridges.
NEW PRODUCT BULLETIN
Completely symmetrical construction with integrated amp left-right separation.
Large heat sink, huge power transformer, custom-made block capacitors (24,000µF) and preamp board.
3/4
Signal passes through two circuits increased noise
In
Volume
Volume
Bass / Treble
Tone control circuit
Bypass
Out
Out
Signal passes through one circuit lower distortion, higher S/N ratio
In
Flat
+
+
Treble
Bass
Conventional Amplifier
A-S2000
Natural Sound Stereo Amplifier
(2 pages)
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