I think I have the same problem.

I use my Gatorised Caiman for cable TV, CDs, and a DVD/Blu-ray player.

I remember a music TV channel had to be turned over due to constant treble distortion.

Also, on CDs, certain tracks distort in the treble, consistently.

However, Blu-rays sound incredible and they should considering the money Hollywood can pour into recording quality. I never hear distortion on the movies, which makes me think recording/output quality could be at fault on the cable box and the CDs.

I've only had the Gator a couple of weeks so will continue to survey the problem.