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New circuit technology
Since the advent of digital audio, signal-to-noise ratios
have improved dramatically. However, the S/N ratio
reflects static noise only, and takes no account of another
type of noise that occurs as the byproduct of sound
reproduction—dynamic noise. To reduce this type of
noise, Onkyo has developed New circuit technology for
use in our hi-fi components. Despite being beyond the
normal range of human hearing, frequencies above
100 kHz are susceptible to clock pulse and other forms of
distortion from digital devices. Such distortion in the
super-high-frequency range can generate “beat
interference”, which in turn affects the character or
atmosphere of the original sound. By improving linearity
and reducing distortion in the super-high-frequency range,
Onkyo’s new New circuit technology effectively reduces
perceptible noise. New circuit technology is incorporated
into the buffer circuitry of the C-7000R CD player.
Separate Digital/Analog Circuitry and Transformers
To prevent unwanted interference, the C-7000R employs
physically separate circuitry for digital and analog
processing. In the same vein, the player also features
separate transformers for digital and analog circuitry.
Thermally Regulated Super-Precision Clock
The C-7000R boasts an extremely precise clocking
mechanism that controls and coordinates the timing of all
digital signal processes—rather like how a conductor
directs and coordinates the individual instruments of an
orchestra. The C-7000R uses a state-of-the-art crystal
oscillator that achieves a frequency deviation of ±1.5 ppm
at room temperature-much lower than with a conventional
oscillator. Even in surrounding temperatures of -30°C or
+80°C the frequency remains stable, with only ±0.5 ppm
of additional frequency deviation.
PLL (Phase Locked Loop) Ultra-Low Jitter Technology
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.
New Circuit Board Construction
Rather than being directly connected to the chassis base,
the circuit boards inside the C-7000R 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