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Full Floating and Balanced Circuit Design Achieves for the First Time the
Full Potential of Analogue Amplification
An entirely new floating and
balanced power amp that, by using power transistors with the same polarity that
are not complementary, achieves complete symmetry of pullable operation at the
output stage and permits full balanced transmission (amplification) from the
input jack to just before the speaker jack รณ a capability that has long been
the dream of audiophiles.
Full-Stage Balanced Signal Transmission
The A-S2000 achieves fully
balanced signal transmission from input to output (balanced design refers to the
use of two signal conductors that have equal impedances to ground). Balanced
transmission is capable of canceling noise produced internally and externally,
and so is considered to be an ideal amplification method, eliminating the sound
quality degradation caused by noise.
Floating Balanced Power Amp
The floating balanced power amp configuration
is completely different from the pure complementary circuit design that has been
the mainstream of Hi-Fi amps for nearly 40 years. It adopts an output element
having identical polarity on the plus and minus sides of the output stage, with
both sides having their own power supply and feedback, thereby achieving total
symmetry of pullable operation at the output stage. The power supply unit has
four floating elements (no restrictive grounding connections), two for each
channel, so plus and minus are completely symmetrical.
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.
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.
The AS-2000 comes with a five year warranty. |
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