I have a 2 ch TMA amp 110 watts on each channel. I was wondering why I couldn't find the signal to noise ratio anywhere...and its probably because it sucks. I thought my front speakers were screwy, but when I switched them to my alpine amp the slight static when the volume is low went away and the overall improvement was amazing, and of course these problems went to my back speakers that it is now powering. I don't know any one who really cares so I just needed to complain about it somewhere...I wouldn't buy their amps for a full range speaker again. hopefully I can get at least 100 for it on ebay, and buy my self another alpine or something.