I own a LS16 and there is no objectionable noise. I've compared it against Classe CP-35, CP-45, CJ PV-12, CJ PV-14L, Adcom GFP-750, all of which I have owned or still own. I my LS16 single ended. That LS16 you had must be defective, doesn't mate well with your other gear, or you just like slamming AR. I'm very pleased with my LS16.
