Hissing sound coming from tweeters


Right now I'm experiencing a hissing noise coming from the tweeters on my Klipsch RF7II's, and can't figure out what is causing the noise. It's almost like a white noise that is there when the amplifiers are powered on and is not affected by changes in volume.

My system consists of an Oppo BDP-83 blu-ray player, Ayre K-5xe preamp, and two Emotiva UPA-1 mono blocks. My cables are Audioquest King Cobra and Audioquest Emeralds. I would greatly appreciate any help resolving this problem. The hissing sound is very annoying. Thanks.
cfaille
I'm taking the Ayre in to the hifi store on Saturday and will try hooking it up to some of their gear just to make sure there is nothing wrong with my preamp. While I'm there, I might as well demo it with some other power amps to get an idea of how it will sound. Only problem is they dont have any speakers with horn loaded tweeters, so it might be like comparing apples to oranges. I think my preamp just doesn't like the cheap emotivas for some reason. My system is lacking synergy.
My Tannoys are hissing since I changed preamps. The Cary SLP-05 was quiet, but the new preamp is very noisy. I won't mention the product, because the designer has promised to address the issue.
I sit in front of massive front horns honest 106db my tube amps on nothing playing only sound I hear is my heart pounding. No system induced noise at all....