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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
cleeds
2,065 posts
 
Was this a sudden change, or a gradual change?
proacman OP
30 posts
 
Sudden and on both channels. And does not change when I move around the room.
erik_squires
5,268 posts
 
Room acoustics, power conditioning, warm up time.

If you have moved furniture around, removed absorbent materials this can definitely cause this. Another thing, leaving your equipment off for extended periods of time. Also, removal of a good power conditioner.

Lastly, new sources of AC noise in your home.
shadorne's avatar
shadorne
7,333 posts
 
Did you damage your speakers? Playing too loud or clipping?
proacman OP
30 posts
 
Not sure it would be room acoustics as there is no improvement as I walk around the room. The amp is plugged in directly to the wall and thus it is possible that ac noise is the cause but the issue is so pronounced and the P5 (only front end components plugged in) indicates a pretty decent sine wave and voltage that I tend to think not.

I would hate to think it is related to the Pass Amp as at 88 pounds it would not be fun to send back to dealer. 

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