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A
brief history of musical amplification, from its origins to INPOL®
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Which is the ideal
amplifier? Easy: it is the one able to perform the task that
justifies its existence which is to render the source signal capable
of driving the speakers. In other words, the ideal amplifier is none
other than the notorious "Straight wire with gain", a
utopia that has disturbed the sleep of acoustic engineers as much as
the "Philosopher's stone" troubled that of alchemists all
over the world for centuries.
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In the beginning there were tubes |
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In the early days of
musical reproduction, tube amplifiers were not a choice but a
necessity, because in those times technology did not offer
an alternative. So audiophiles of the time had no reason to complain.
And they had good reason too: airiness, refinement and musicality
are characteristics that still make tubes a big hit. They are not,
however, without their concessions (output transformers) and they
are not usually generous in the delivery of current, showing some
limits in “speed”.
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Then came Solid state |
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There was a time when the
transistor took over completely from the antiquated vacuum tube. It
was the era of muscle. punch and watts galore.
And it was also the era of decimal competition: high levels of
feedback allowed long lines of zeros after the decimal point and
before that sad numeral 1, the only clue to an almost inexistent
distortion. The result was to de-naturalise sound. To make matters
worse the CD arrived which, with its digital "coldness",
made the limits of solid state even more apparent and caused many to
dreani of a return to tubes. Which actually did return...
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And then the hybrids |
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But the return was not
painless and the price that had to he paid was unacceptable to many.
So new factions were formed amongst audiophiles proclaiming the supremacy
of one amplification system or another (in addition to those that.
in the field of source, still see the "analogueists pitted
against the "digitalists"). Someone then thought to
straighten out the situation and resolve the problem once and for
all by inventing the hybrid. an enchanting mixture of tubes and
transistors. Certainly a noble intention. hut one not always matched
by the results: in many cases, instead of highlighting the good
qualities of tubes and transistors, it summarised the had ones!
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Now there is INPOL® |
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Then one bright day,
after numerous sleepless nights, a clever designer and engineer,
Gianni Borinato, decided to make a clean sweep of all the schemes
and conventions applying to amplifiers
and - we don't know whether presumptuously or
frivolously - tried to re invent everything from scratch in the
light of modern technological wisdom. He chose to use tubes for the
input stage not in deference to fashion or nostalgia, but because
they are still the best means of amplifying tension. And he found a
way to make use of what the transistor does best: amplify current in
order to adequately drive the
speakers. "But it's a hybrid!", you say. Yes, apparently.
The big difference is the fact that
does not introduce any manipulation of the audio signal. In
order to express the idea better, INPOL® works like a pantograph,
copying the signal absolutely faithfully. That is to say, it does
what an amplifier is supposed to do. Certainly we are still light
years away from the ideal "Straight wire with gain". But
an important step forward has been taken, and it deserves listening
to.
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How to listen to INPOL® |
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When preparing to listen
to INPOL® for the first time, it is necessary to make a little
effort: free yourself from all convictions, cliches and
pre-conceived ideas. If not, staunch tube fanatics would remain
enraptured by a sound that is too exquisitely "tube", but
would be per plexed by the unfamiliar speed and dynamics. The solid
state fans, on the other hand, would be enthusiastic about the
efficiency of these parameters, while remaining bewildered by the
absence of angularity, coldness and listening fatigue. In order to
overcome the initial impact of INPOL it is advisable to concentrate
solely on the music from the very beginning. Only after the spirit
has been uplifted by it can one rationally appreciate the
transparency, airiness and natural quality of emission, the speed
and dynamics in both micro and macro-contrast, the firmness and
breadth in reconstruction of the stage, solidity and control in the
low range and liquidity and mellowness in the high.
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| INPOL®
is a registered patent. |