Help : Need amp as improvement over Adcom 5503


I am using two channels of an Adcom 5503 3 channel amp to drive my Thiel CS2.3s. I know the impedance drops down to 2.3 ohms at certain frequencies. I wonder if this amp is really doing a good job of driving these speakers? Since I'm on a tightly restricted budget, I'm wondering what two channel amp I could get in the $700 (used) price range that would be the best improvement over the Adcom.
bufus
I have enjoyed the sound of B&K M200's and smaller Classe amps with Thiels. I think you could find both used at your price point. I suspect the Bryston 3B ST would work nicely.
Aragon 8002 dual mono amp will absolutely kill the adcom..
I have had adcom 5800s and the aragon is much more musical and can handle loads down to 2 ohms no problem...
The build quality alone on the aragon is much better than any adcom.. add a nice quality power cord and you have a super amp..
Good luck
B&K M200 Monoblocks are great theyre for sale @ audiogon for 750.oo I like B&K amps I haave 2. EX-442 and ST 1400