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Three-Stage Inverted Darlington Circuitry
brings greater efficiency to the A-9000R
integrated amp by employing a low-NFB
design to maintain voltage stability and
enhance transient response. Extremely sensitive
to oscillations, this circuitry requires very
advanced control technology in order to be
incorporated into the amplifier. Breaking
further new ground, the A-9000R employs two
extra transistors for each channel in a “quad
push-pull” design that significantly enhances
amplification power.
Jitter is an unwanted side-effect of the digital-
to-analog conversion process caused by
fluctuations in the time domain of a digital
signal. PLL ultra-low jitter technology reduces
jitter by comparing the input and output phases
of the digital signal and creating an accurate
clock waveform. This enhances the precision of
digital signal processing and noticeably
improves perceived audio quality.
Rather than being directly connected to the
chassis base, the circuit boards inside the
A-9000R are cushioned by internal struts and
affixed to the front, side, and rear panels. This
method of construction prevents vibrations
from the chassis from adversely affecting the
circuit boards.
Using the USB port on the rear panel of the
A-9000R, you can connect your PC and play
back 192 kHz/24-bit HD audio formats
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.
*
Playback of PC audio requires dedicated software
that can be downloaded from the Onkyo web site.
Audio signals of up to 32 bit can be input.
However, the resulting output will be equivalent to
a quality of 24 bit.
2. Quad Push-Pull Amplification Design
with Three-Stage Inverted Darlington
Circuitry
3. PLL (Phase Locked Loop) Ultra-Low
Jitter Technology
4. Side-mounted Circuit Board
Construction
5. Playback of Various Music Sources
Including PC Audio via USB