On Wed, 31 May 2017 21:04:03 -0700 (PDT), Phil Allison
wrote:

** Very few CDs in the past or now use pre-emphasis and some players do not accommodate it.

When I got my Sony, I figured it lacked one feature - it did not reveal if de-emphasis was in use. One could hear tiny click from a relay inside so I added a red LED in parallel with the relay coil and fitted it in the display window.

Can't recall when I last saw it come on.



.... Phil

Interesting subject. When I got my first CD player back in the day,
it had a de-emphasis indicator. I occassionally saw it on, but I
can't remember which CDs were being played at the time. That player
is now long gone and nothing I have owned since then has an indicator.
While I have a nice older stereo set up in the basement, most of my
listening these days is in the bedroom at night while falling asleep.
The bedroom player is a Sony Blu-ray player (BDP-S370). Is it likely
that it properly handles de-emphasis while playing old CDs?

Pat