I'm sure someone has already discussed this possibility, but on two different occasions when your problem arose in my system it was as big a mystery to me as it is to you. I was able to eliminate the problem by addressing the dressing issue and insuring that IC's and PC's were not running parallel nor were they passing close to transformers. Since I did a tear down and reassembly I'm not sure where the villainous wire(s) were but the problem did arise after I had been fiddling in the back of the equipment reconnecting/relocating equipment. FWIW.
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?
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?