I have a pair of tannoy fusion 4 speakers biwired with audioquest cv4 and tara labs quantum III cables. Recently I purchased a onix xcd-88 cd player and replaced my yamaha cdc775. Lately I have noticed that I must turn the dial on my NAD C350 way luder than usualy, around 10 to get decently loud. This was never the case before. Also the sound is very ?trebley? and harsh in the top range, the midrange isnt as warm as usual and the bass is kind of lackluster! What happened? I tested the same cd on my sony sacd/dvd player and it has that same sound, it never sounded like that before. Its not just the one cd either. Using the THX setup I can clearly make out the left channel, the right, and center is directly ahead. When the phase test comes the speakers sound like they are in phase when they are supposed to be and out of phase when they are not supposed to be. One thing I have noticed is that the white noise doesnt sound as loud as it did before.

I have heard before that NAD reverses the polarity for some reason. Could this be the cause. Would switching all the posotive cables with the negative cables on the back of the speaker terminals fix this? I have checked and all cables are setup correctly.