ENGLISH - 16
CHARACTERISTICS
The I-240 is a tube integrated amplification and
preamplification system (based on the legendary U280
ASB, which is a reference in the audio world) that
recreates realistic and dynamic scenarios thanks to the
fusion between the application of cutting-edge
technology and the tonal benefits of the tubes: the
formula of Casa Margules’ characteristic sound.
CLASS-A OPERATION AND ACTIVE SERVO BIAS
This amplifier incorporates our exclusive Active Servo
Bias (patent pending), which guarantees an optimal
operation since it does not require any polarization
adjustment, always operating at pure Class-A to ensure
a detailed sound scenario.
By continuously adjusting the polarization based on the
signal, this circuit radically extends the useful life of the
output tubes and allows them an ideal operation, which
in addition optimizes energy consumption by avoiding
overheating.
ULTRA-LINEAR OPERATION
The output tubes are configured to operate in ultra-linear
mode in order to improve the efficiency in amplification.
SHUNT REGULATED POWER SUPPLIES
The power supplies for the small-signal stages are
independent and of the SHUNT type.
By not having a control loop circuit, they avoid 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 the
common and uncommon defects of the tubes, which
makes them practically indestructible.
ZERO NEGATIVE FEEDBACK
On the other hand, the I-240 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, which is already pre-set. Hence,
the BEFS together with the Active Servo Bias allow the
amplifier to drive with excellent dynamics and controlled
bass the difficult loads in low-efficiency or low-
sensitivity speakers.
CONNECTIVITY
As to connectivity, the I-240 comes with three different
line inputs and an attenuation or high precision volume
control, which allow the use of the equipment with
several sources.
NEURO-ACOUSTIC ALIGNMENT (ANA
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)
The ANA® technology (Neuro-Acoustic Alignment) is
one of Margules’ technological innovations developed
from a fundamental principle: the human brain perceives
sound by prioritizing the harmonic structure above
fundamental tone; that is, it focuses on how humans
perceive sound and not on how we measure it.
This technological advance originates from the
engaging sound theory and is based on the way in which
our brain decodes the information from the sound waves
through the ears: when sounds are closer, they keep us
focused due to the relation between perception and
sound, the distance at which we perceive them and their
intelligibility, whereas distant sounds, even when
intelligible, do not catch our attention and are easily
ignored.
Our ANA® technology is designed to achieve a realistic
sound, with a wide frequency response, low distortion
and precise harmonic reproduction, optimizing to the
utmost the relationship between the source and the
receiver, so that you can enjoy your music in a way you
have never experienced before.
