As mentioned in this good article,
It all depends on the hardware used
for the VDR box. My current VDR box
is 300 (W), 60 (H), 200 (D) (in mm)
My new version will be bigger again (width)
to fit with the standard audio device width.
It's not only size that matter.. it's the
appearance that matters and the silence of
the device. Yes, such a low noise level that
it's even difficult to hear the box is possible.
of coarse... such optimizations are expensive.