Sony STR-DA5000ES - Fm Stereo/fm-am Receiver Technischer Hintergrund - Seite 11
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• Built in DC Phase Linearizer. Where Sony's 24-bit LSI required a second
chip to contain the DC Phase Linearizer, this circuitry is built right into Sony's
32-bit design. The process is performed by Infinite Impulse Response (IIR)
calculation, which processes more data in less time.
In this way, Sony has taken the critically-acclaimed S-Master Pro amplifier
to a higher level of precision and performance. Those fortunate enough to own
of the STR-DA7100ES will experience superb clarity of expression, relaxed
listening hour after hour, and the effortless dynamics to handle everything from a
the Dies Irae of Verdi's Requiem to the meteor impacts of the latest action movie.
The Low Pass Filter is a crucial stage in any digital amplifier. The filter
must have a turnover frequency high enough for high-resolution audio, yet have
a cutoff characteristic steep enough to suppress high-frequency noise elements.
In this way, the filter has a major influence on sound quality. That's why the
engineers of Sony ES selected the filter parts carefully and methodically. Instead
of choosing less expensive cylinder-type coils, the ES engineers chose exotic
toroidal coils, optimized for sound. Customers will never see these toroidal coils,
but they will hear the benefits in clean, open, non-fatiguing music reproduction.
Shown here wrapped in black, the toroidal coils of Sony's Low Pass
Filters are more expensive. But their contribution to sound is more than
worth the price.
In traditional amplifiers, the output transistors or ICs directly shape the
analog waveform. For this reason, traditional amplifiers are extremely sensitive
to the selection, configuration, bias current and heat sinking of their output
devices. By their design, digital amplifiers are inherently less sensitive to these
factors. That's why some previous digital amplifiers have used relatively
inexpensive integrated circuit op-amps at the output. But Sony ES engineers
were after the best possible sound. So they selected deluxe Metal Oxide
ES Receivers v1.0
Toroidal Low Pass Filter
MOS FET Output Transistors
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