Sony DVP-NS999ES - Manual (Page 30)

ES Series DVD-Video/CD/SA-CD Players; Version 3.0 Page 30
A generous application of anti-resonant damping materials to the top
and sides of the DVP-CX777ES case.
Frame and Beam chassis (DVP-NS999ES)
Sony's Frame and Beam (FB) chassis uses a thick, high-strength frame
which gains additional rigidity from two metal beams that cross the top of the
chassis. Extensive internal cross bracing adds even more strength. As a result,
the Frame and Beam chassis suppresses vibration.
The Frame and Beam (FB) construction of the DVP-NS999ES is
supremely strong to suppress resonance.
Off center insulator feet (DVP-NS999ES, NC555ES)
To prevent shelf-borne vibration from entering the chassis, Sony's
insulator feet locate the screw hole off center. By varying the radius from screw