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Why does my system now have shrill top end.

The equipment in my system (listed below) has not changed but I now find on both CD and Vinyl a high end shrillness to the sound (treble is very harsh) that has become very annoying, especially at high volume levels. I have no idea why this happened all of a sudden.

Endevour E-3
Pass 30.8
Pass XP 20
Esoteric K01x
Linn LP12 (Ortofon Black cartridge)
Linn Linto Phono Preamp
PS Audio P5 (Amp plugged in directly to wall)
JL Audio F112 v2 sub
OCOS Speaker cable (15 feet)
Pass XLR interconnect (Preamp to Amp)
Harmonic Technology Cable Magic Link (not current version). RCA termination

Any ideas?
proacman
proacman OP
33 posts
 
I owned the Response 2 and 2.5 for many years. That is where the name comes from. And is sure is easier to spell than VonSchweikertman.
gdnrbob
4,407 posts
 
Heehee...
proacman OP
33 posts
 
As an overdue update, I was able to slightly mitigate the harshness by replacing the stock power cord that came with my PS Audio P5 with a PS Audio AC12.
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