Help! My system is very bright it hurts my ear

I have a monster cable conditioner n a Belkin pf31...I plug both amp into the monster conditioner...I have tried switch out n plug in wall, but still...n also tried switch them all around...but power reading at at about 120...

I'm also tried to look for a decent cable to match my system...any advice...thanks

I agree with losing the biamp for now; simplify your system and use one amp until you stop the offending brightness.
 
Then address treating your room for best sound. Can you answer these questions, please...
- What are the dimensions of the room? We only know that it's a high ceiling.
- Do you have carpeting or bare floors?
- Do you have bare walls? You'll need to have wall hangings or furniture against the walls so that sound waves don't bounce around.
- How far away from the speakers is your listening position?
- Have you done any reading about how to use acoustic room treatments?

What is the floor material in your room? If your’e playing your music to decent or moderate levels and your room is very reflective or lively no cables, or putting a tissue over the tweeter is going to fix things. I’d try only one of your amps and plug it directly into the wall not using the Monster. As someone earlier I think mentioned, you need to simplify things. It will be easier to solve your problem with less going on.

If you have purchased any of your equipment from a local store ask if someone there would visit your home to hear it first hand. Most experienced audio salespeople know how to set a system up properly.

If you want to rule out its not your gear but your room, set it up in another part of the home in a smaller room with lower ceilings if possible. A large room with 20ft tall parrallel walls is going to be a bear to control. I don’t have even be there to have an idea how it must sound. You need to deaden the room, reduce the slap echo and have furniture such as bookcases up against the walls to break up the reflections; read up on standing waves. If you have a hard surfaced floor throw down a nice heavy rug between your speakers and you. If you have a big glass coffee table in between you and the speakers you need to cover that while listening.

If you have this big room with tall ceilings and you’re a minimalists / contemporary dweller with a sparse finished room that’s not helping you. Just guessing on your room here. The point is, that room needs objects and absorbent materials to control room modes. Get your hand clap to have less echo and ping in your room and you’ll be happier. Think how it sounds when you clap outdoors. That’s your reference. Good luck.

I have wood vaulted (timber frame) ceilings in my home theatre room 17' high 24'x28'  it has two sofas, a projection and 5-1 set up it has been a challenge to tame the highs.I would bet the bulk of your problem in placement and room acoustics.imo