what amp under a grand?


I have vienna acoustic mozart grand marantz sr5005 avr,marantz 8001 sacd,vieanna theatro center,b&w 600s3 for rears,current amp adcom 555mk2.looked at used parasound hca 2003 thx, rotel rb 993, and and an adcom 5802.im fine with the performance the marantz gives me for ht but for two channel sound is muddy. i think its the amp? any advice on a used amp that would bring out the detail of the mozarts?
jughead
You simply can't go wrong with the A21, and if you're like me, you'd always wonder about the A21 if you opted for the A23! You've got a stellar combo, congrats.
Runnin you asked about cables, ill be using siltec silver xlr for the amp pre amp, and acrolink silver rca for sacd and audioquest jags for all the ht bypass connections. and audioquest k2 speaker cable.
Just got the p5 today, and wow! it blows the 2100 away! im running my adcom 555 mk2 with it until my a21 comes mon. the adcom sounds real good with the p5 cant wait to hear the a21.
which would be the better connection with the a21 and the p5? balanced or unbalanced?