Sony DVP-NS999ES - Manual (Page 29)

ES Series DVD-Video/CD/SA-CD Players; Version 3.0 Page 29
Construction Quality
Anti-resonant chassis design (all models)
Vibration is the enemy of CD, DVD and Super Audio CD players for two
powerful reasons. First, vibration in the disc or optical pickup triggers unwanted
operation in the tracking servos. This can radiate spurious noise throughout the
chassis. And this radiation occurs in exactly the wrong place—near the sensitive
low-level optical pickup preamplifier. To make matters worse, vibration can also
cause subtle distortions in the audio circuitry. Vibration can have tiny
"microphonic" effects on capacitor values and point-to-point wiring. While these
distortions are not always apparent to the casual listener, Sony's design program
required performance without compromise. For all these reasons, every ES
Series DVD player incorporates anti-resonant design.
The DVP-NC555ES uses a high-strength frame, with a broad plate to
separate the chassis into two sections. The disc carousel and drive
occupies the bottom while the electronics occupy the top.
For example, the DVP-NC555ES is built upon a thick, high-strength frame
to reduce unwanted resonance and vibration. Because the top and sides of the
case are particularly prone to vibration, the case of the DVP-CX777ES
incorporates extensive anti-resonant damping material. This helps suppress
vibration for cleaner, more natural sound. The DVP-NS999ES goes further still
with Sony's Frame and Beam (FB) chassis.