© by www.audioalto.com
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All capacitors used in the audio path and blocking positions are high grade metal film
polypropylene Wima (MKP4 and MKP10).
Volume regulation is realized with Blue Alps motorized potentiometer. All resistors are metal
film 1% (excluded high power resistors). The wiring is done with OFC (oxygen free) copper
cables, all connectors are high grade gold plated. Signal switching is performed with 16 high
grade completely closed signal relays (with silver plated contacts). The additional functionality of
the input select relays is to completely isolate the unused source from the input of the amplifier
(including the common pin – ground). Benefits of this approach are lower crosstalk between the
channels and removal of the potential ground loops between different attached sources, thus
lowering noises and input hum.
Input Phono/I1 can be configured for line or phono (RIAA) input moving magnet (MM) sensitivity
(moving coil MC can be also ordered). The phono preamplifier is optional and can be ordered
and installed separately. The circuit topology compared to widely used circuits is innovative with
two amplifiers working in parallel. This configuration lowers the distortion and noise. The
amplifiers are working in class A mode and also providing high current driving capabilities that
the low noise RIAA equalization needs. The power supply for the amplifier is additionally filtered
with the intention to eliminate the noise and internal insulation discharges. The sound of the
phono amplifier is remarkably natural, open and detailed.
The digital control logics (including the radio frequency remote control
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) are designed as not
active (static) while not in use, so no disturbing noises can degrade the listening process. The
control logic is also electrically isolated and optically separated.
The assembly of the unit is handmade; all components are tested for functionality and
tolerances before being installed.
All these approaches give the AA DMI 3 H a remarkably detailed, natural, open reproduction and
provide great stage sound.
We are sure that such approach in design and building will give our customers great
satisfaction while using and enjoying the music for many years!
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- separately ordered
