The Dynavector PHA-200 phono
head amplifier is a unique current amplifier that offers the best
performance for most moving coil cartridges. The PHA-200 is a
complete redesign of our PHA-100, using new circuitry and the most
advanced, highest quality components.
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The most unusual feature of the PHA-200 is its amplification method.
Conventional phono stages or step-up transformers are designed
to accurately amplify the very low output voltage of moving coil
cartridges. In contrast, the PHA-200 extracts the maximum current
signal from the cartridge, and then this current is converted into
a voltage high enough to drive a conventional line level pre-amplifier.
In the PHA-200 the coil of the cartridge is short circuited or
terminated by zero ohms, consequently the current from the coil
is much larger than with conventional voltage amplification.
All cartridges have magnetic distortion caused by nonlinear characteristics
within the magnetic materials of the cartridge components. These
distortions have an adverse affect on the sound quality.
By using current amplification and extracting the
current signal, the magnetic distortion of the cartridge is significantly
reduced. In other words the linearity across the reproducible frequency
range for the cartridge is improved. As a result the PHA-200 is
able to amplify the original cutting signal on records as precisely
The sonic advantages of the PHA-200 compared to conventional phono
stages or step-up transformers is immediately apparent. The neutral
soundstage, rich mid-bass and smooth highs are most impressive.
The overall sound quality offers improved transparency and resolution.