Previous responses are dead on,if your opionion is that it sounds good and you are happy why try something else, What are your Opinions? Personaly I have used Adcom 565/555 with B&W speakers and for power/watts/bass very good but soundstage/image/treble grit left alot to be desired ,then I tried a McCormack Dna.5 , half the power and 10x,if not more, better sound to me, first listening opened up a hole can of worms , hearing what I had been missing caused me to try new preamps and source componets etc,more enjoyable listening experience and a thinner wallet, I guess you have to be careful what you wish for,Hearing what I have heard I will never go back to Adcom components, but of course this is my opinion and my ears.