I know im going to get crap for this, but i,ll tell you anyway. I know what sounded best in my system, sunfire signatures two channel amps , easily sounded as good or better , I preferred them over 333 ,336 33h and I owned all of them. THis was with a 380spre 39cd with360s da i still own all the frontend pieceswhich i like .IM running all transparent ref xl. martin logan statement twos and rel studio2 subs,the sunfires seem to work better on this system, give them a try.