Help! My system is very bright it hurts my ear

If you're plugging your amps into any cheap power / computer strips pull those out. Plug your amps directly into the wall. If you are by chance using computer type power strips don't plug any of your gear into them; get rid of them. Also if you have all this gear on a shared circuit with lights or what ever else that doesn't help. If amps aren't  being feed well they can sound a little lean and if you're really pushing them it becomes worse. Dedicated circuits  make a huge difference and a hospital grade Hubbell receptacle makes a nice difference and they're affordable.

These types of tweaks help a lot but I still bet your room needs the attention first. 

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 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?