"Wond" wrote in message
...
On Sun, 10 Jun 2012 22:22:36 +0100, Gareth Magennis wrote:

"Jeff Liebermann" wrote in message
...
On Sun, 10 Jun 2012 13:36:55 +0100, "Gareth Magennis"
wrote:

Or that the source is not now clipping a pre-amplifier/plugged into a
phono
pre-amp by mistake?

Nope. That's backwards. The RIAA equalization curve for an amplifier
phono input boosts the lows and attenuates the highs.
http://en.wikipedia.org/wiki/RIAA_equalization In this case, it
sounds like too much highs, which would not fit the curve.





I thought it was the other way round in this case, i.e. that the highs
were unintelligible (like fluff around a needle, according to Mr.
Cook).


Gareth.

I liked your previous suggestion: its being overdriven. Can you turn
down the source, Nigel?


I saw a demo once where successive amounts of RAM were switched out of the
digital signal path and the sound got rougher and rougher.

Makes me wonder if there's maybe a RAM problem in there somewhere.

Mark Z.