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
There are few Crown K2 amps could be purchased at fraction of their brand new price in perfect condition $450...700 ranges.
This amp is like no other pro amp is suitable for high-def home audio applications.
any thoughts on the parasound a23 amp, and the p5 preamp? i really like this combo.
Think im gonna up my budget for my amp pre amp. Im looking at the Parasound a23 or the a21 amp, and the p5 pre amp. im sold on the p5 but unsure about the amp. would it be smarter to go with the a21 specs look the same except for the power supply of course.has anyone owned these amp?