Margules ACRH-3, Owner'S Manual

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ENGLISH - 16
CLASS-AB+ OPERATION
The design of the ACRH-3’s amplification stage is one of
direct coupling and discrete semiconductors that
operate in AB+ configuration, which allows it to optimize
the junction between stages, avoiding signal loss.
The amplifier’s output stage has a specifically designed
circuit that optimizes the operating point of the high-
output transistors. This reduces the high level of heat
produced by other types of Class A designs, while
avoiding the distortion of Class B designs.
In the same way, thanks to its design, it can effortlessly
generate a high current, thus enabling the management
of difficult and complex loads.
TUBE PREAMPLIFICATION STAGE
The preamplification stage is based on a design that
uses two double-triode small-signal tubes (one per
channel). It also has regulated power supplies, both for
the filament and for the high voltage of the tubes,
ensuring a very low level of noise and avoiding
microphonics, which provides to musical reproduction
a feeling of warmth and instrumental richness.
CONNECTIVITY
Line Level Inputs: The ACRH-3 has four different RCA
unbalanced inputs suitable for connecting line level
devices such as CD players, tuners, tape players,
turntables with built-in phono stage or an external phono
stage preamplifier.
Phono Input: The built-in phono stage preamplifier is of
high quality and totally discrete, with a gain that allows
its compatibility with moving magnet, moving iron or
high output moving coil phono cartridges.
Amplifier Input: The factory setting of the ACRH-3
provides an unbalanced RCA amplifier input, which is
connected to the preamplifier output (PRE OUT 1) by
means of a bridge or jumper that can be removed in
order to connect a different amplifier or sound
processor.
Preamplifier Output: The design of the preamplification
stage allows an additional output (PRE OUT 2), which
may be used for the connection of an active subwoofer
or, if so desired, another amplifier.
Line Level Output (
Direct Output): The ACRH-3 has a
line level output controlled by the input selector on the
preamp stage that is not affected by the volume control
(this output completely removes the volume control
from the signal path).
This output can be used to connect a recording device,
send the audio signal to another area, or to connect the
equipment to a surround sound processor, thus giving
you the flexibility to integrate your high-performance
stereo system into your home theater system.
Electrical output: The ACRH-3 has an electrical output
with a maximum capacity of 15A / 1,800W (controlled by
turning on the equipment).
This output is designed to be connected to the Magenta
QR2 Noise Line Suppressor. This allows you to centrally
turn on the audio components connected to the
switched filters by polarizing the ACRH-3’s AC output.
NEURO-ACOUSTIC ALIGNMENT (ANA
â
)
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.