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
I picked up the new HSU VTF-15H MK2 ($1006 delivered) - it replaced my 10 year old Velodyne HGS-15 Servo (which was 4x the cost) - and the HSU blows it away! It was like hearing a sub for the first time!

Shorty after I replaced my NHT T-6 Evolution (same age - $4k) with the EMP TEK R55Ti Evolution Towers and matching center & surrounds ($1700 for all five) - again the EMP TEK blow the NHT's out of the water! Soundstage and imaging are out of this world. The speakers simply disappear and all I hear is the music.

Same thing with electronics - with the old set up I had a Sunfire Theater Grand III - Marantz MA-700 monoblocks - expensive cables - blah blah blah. Today running a new Pioneer SC-85 Atmos receiver with the EMP TEK's - HSU sub and I've never had better sound. Period.