Why does my system now have shrill top end.

Do you leave your front end equipment on all the time or turn it off when not in use?  Warmup could be in play.  Is this for both LP and Digital playback?  

Second on Almargs comment about the OCOS Speaker Cable - 15 feet is a long cable - try a set of Canare 4S11 they are pretty inexpensive and a great value.

Best of Luck

Peter

What the hell is up with you nutjobs and your snake oil fixes????
It sounds like something is wonky with the power supply in the amp. Not cables!!! Not morphic fields! Idiots!

@kosst_amojan   


+1 

You discovered why snake oil (fancy cables etc) works - it all starts with faulty equipment and goes exponentially from there....

Al,

Is it possible the P5 is the problem? Not because he plugged the amp into the P5. I doubt is any Pass amp would liked being plugged into a power conditioner.

When the OP is using the P5 for the front equipment could the P5, because of some  internal problem, be causing the sound problem?

I didn't read any OP responses where he tried removing the P5 from the chain. I would try that. Even so far as unplugging the P5 from the AC mains outlet.

@proacman,

When the kitchen was remodeled did the electrician add any new circuits from the electrical panel to the kitchen? If yes he might have moved existing branch circuit wiring around inside the electrical panel, just physically moving wires with his hands when installing the new branch circuit wiring inside the electrical panel enclosure. Just the side to side moving of solid core branch circuit conductors around inside of an electrical panel can change the wire to branch circuit breaker terminal tightness connection. 

proacman OP21 posts11-28-2017 8:15am

Unfortunately the problem is getting stranger. When I turn off all the kitchen lights and play a few songs that are very harsh and then turn them back on their is no difference. But, I plugged the Pass amp into the P5 instead of directly into the Wall and all the Bass was sucked out, as if the speakers were out of phase (they are not). Now this certainly makes no sense. Makes me wonder if the Amp is the issue. Have a five channel amp in my surround system that I will switch with the Pass to see if there is any difference in the harshness (and now bass).

@proacman,

Please, please, please, do try the other amp before kosst amojan has a total meltdown and kicks the dog.

.