Arny Krueger wrote:
"Robert Morein" wrote in message

"Paul L" wrote in message
om...
My DVD player and my digital reciever have both coaxial
and optical jacks. Which connection should I use to get
better sound quality or are they all equal?

The coaxial connection is superior, although modern
digital receiver chips have narrowed the difference.

In the service manuals for certain digital preamps, Sony
instructs that the adjustment for harmonic distortion
must be performed with a signal source delivered by the
coaxial input. This shows that in some cases, the digital
input receiver can suffer with an optical connection, in
a measurable way.

No excuse for this kind of flaw at all.

Indeed, because of the elimination of EMI with optical, if anything Sony
should be recommending the use of the optical input for critical
adjustments.

I'm surprised that Sony is admitting to building such flawed equipment. I'm
surprised that they are building such flawed equipment.

I'll bet this issue is as simple as the input test point for the THD
distortion adjusment is simply tied to the coax digitial in in some way
and not to the optical. Maybe they put the test point in front of a
source selector relay matrix but chose to include only tap. Once again
Morein shows his propensity to leap to conclusions wholly unsupported
by the available facts.

ScottW