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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
35 posts
 
Thanks for the advice. I assume the ac cables do not degrade themselves.
robr45's avatar
robr45
319 posts
 
Have you changed anything in your room? Added a coffee table, moved speakers, etc? Have you changed where you sit? 
shadorne's avatar
shadorne
7,491 posts
 
Aging equipment (a cap has degraded) or a loose connection. 
proacman OP
35 posts
 
The only thing that was changed in my house is that we put a new kitchen in. As the system is in the basement and I use the P5 except for the amp I cannot figure how that would have made a difference but stranger things have happened.

In regard to aging equipment all the electronics are less than 4 years old. Only old items are the speaker cables/interconnects/power cables.
imhififan's avatar
imhififan
2,232 posts
 
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.
On both channels?
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