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DESIGN CONCEPT
Since decades, the circuit design of the majority of projects worked out in amplification is
essentially based on a differential scheme which, with time going on and by the use of
components characterized by ever increasing performances, has led to really remarkable
accomplishments from the sonic viewpoint.
Unfortunately, the most relevant shortcoming of this kind of circuitry is the frequency response
and, with it, the rapidity in the transient response (slew-rate). Differential designs for
amplification (voltage feedback) with quite extended frequency response have the drawback of
a transient instability or, anyway, when excited with a step impulse, their output attains a steady
state only after several “extra” oscillations that, clearly, affect the original signal with a
coloration.
Starting from the assumption that an electric network belonging to the amplification chain
should strictly not affect the input signal (namely, it has not to add anything to the signal, but
the pure amplification), AUDIA developed a radically new circuit design, free from the flaws
described above proper of the differential scheme. This new scheme exploits a CURRENT
FEEDBACK, rather than the usual voltage feedback, the amplification is of the trans-impedance
kind (and, therefore, extremely linear) and the feedback is closed before the output stage. The
resulting outcome consists of very fast, stable circuits with the utmost ability to control even the
wildest reactive loads.
Obviously, beside developing a new technology in amplification design, we spent a lot of
energy in looking for first class components, both for the quality and the performance, for clean
signal paths, for unique transformers, all that is needed so that AUDIA products be, all in one,
SUPERB!
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