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Idiomas disponibles
Idiomas disponibles
CHARACTERISTICS
TH
The U-280 SC 30
Anniversary is a tube
amplifier that recreates realistic and dynamic
scenarios thanks to the fusion between the
application of cutting-edge technology and the
tonal benefits of the tubes, complying with the
ANA design philosophy: the formula of Casa
Margules' characteristic sound.
CLASS-A
OPERATION
ACTIVE SERVO BIAS
This amplifier incorporates an improved version
of our exclusive Active Servo Bias (patent
pending),
which
guarantees
operation since it does not require any bias
adjustment, always operating at pure Class-A to
ensure a detailed sound scenario. Also, our
circuit allows the use of different kind of power
tubes (KT-88, KT-90, KT-120, KT-150 and 6550)
without any adjustments.
The active servo bias works on real time and is
set by the signal and not by the tube, this circuit
allows the U280 to operate in FULL CLASS A and
radically extends the useful life of the output
tubes and optimizes energy consumption.
TRIODE
/
ULTRALINEAR
CONFIGURATION
The output stage tubes can be configured
through
the
simple
(triodes/pentodes),
changing
function,
optimizing
efficiency
characteristics.
SHUNT REGULATED POWER SUPPLIES
The power supply for the small-signal stages is
independent and of the SHUNT type.
By not having a feedback loop circuit, avoids the
induction of harmonics, guaranteeing the
integrity of the audio signal.
Another advantage of the SHUNT power
supplies lies in the carefully designed circuit to
protect them from tube failures.
AND
REDESIGNED
an
optimal
OUTPUT
flip
of
a
switch
the
transfer
and
tonal
ZERO NEGATIVE FEEDBACK
On the other hand, the U-280 SC 30
Anniversary amplifier avoids the use of negative
feedback, a common practice that results in a
loss of details and sound richness.
BACK ELECTROMOTIVE FORCE SENSOR
In order to improve the damping factor without
recurring to negative feedback, Margules has
developed the Back Electromotive Force Sensor
system or BEFS, which changes the output
impedance of the amplifier per the load
requirement.
The optimal impedance of the equipment ranges
between 4 and 8 Ohms, selectable through the
speakers' connectors at the back of the
amplifier. Hence, the BEFS together with the
Active Servo Bias allows the amplifier to drive
the speakers with excellent dynamics and
controlled bass.
LOW
DISTORTION
WITHOUT
FEEDBACK
The
U-280
SC
power/distortion curve is uniquely low in a non-
feedback and tube circuit, thanks to its
redesigned Active Servo Bias.
TH
NEGATIVE
30th
Anniversary
ENGLISH - 17
Publicidad
