In article ,
Ash wrote:
I was told for long runs always go optical, as coax picks up
interference. Coax only good for short connections.

You should tell that to pro studios etc, as digital distribution is
invariably co-ax for much greater runs than domestic ones could possibly
be. From studio to transmitter it will probably be optical at some point.

Also, as it is pulses of light, on and off, it either works fully or not
at all,so no degregation of sound.

That's the beauty of digital in general, not just optical,

--
*I almost had a psychic girlfriend but she left me before we met *

Dave Plowman London SW 12
RIP Acorn