Best pre-owned 2-channel amp for under $2000??


Ok so I really could use some help directing me to a pre-owned 2 channel solid state amp to replace my Adcom GFA 555. I am open to the newest generation of Class D amps, but that would be a new purchase, most likely, and I am trying to stay in the used market for value and price purposes.

I have an Integra DHC 9.9 pre/pro, and I listen to alot of rock, blues, jazz, and female vocalists, on CD. My most recent - and largest investment by far - the Dynaudio Contour S3.4s, which I purchased new a year ago for about $5K, seem like they are asking for more and better sounding power.

I was considering the McCormack DNA-225, or the Classe CA-300, which I am sure will be a noticeable step up, but I would like some additional recommendations that more experienced audiophiles might have, based on what would pair best with my existing gear. I need to keep it under $2000 (used), and preferably closer to $1500. Thanks!

Fred
fredorama
I would be very careful here -- your Onkyo is a great machine... Period I have an Onkyo 905 using Lexicon Monos / with B&W 800s fronts / 802s sides / htm1d center / Sony BdV5000 Blu ray / middle high end cables & power cords / Furman IT 15 Ref power conditioner-- I directly compared the Halcro Ssp200 (12k pre) and the new Lexicon HD pre to my Onkyo 905 _--- And I actually like the 905 significantly better to where I returned the other 2-- then I started a thread on Audiogon here, and most responses seemed to correlate my findings--Dave
My favorite is the Muse model 160 Mk.II for a riddiculously low $700.Hafler 9300 and 9500 transnova amps are great and less than $500.An Aragon 8008BB should set you back less than $900 and is a wonderful amp.
A lot of great suggestions. I would be partial to mono blocks. Over the years I have found regardless of brand, they work better then a single chassis unit. Always try for three, with one as a spare/compare unit. If possible look for units that can be bridged. I've been partial to Marantz for a long time. In my solid state life I presently run four MA22's, bridged for two channel effect. Integra DHC 9.9 pre/pro is a great unit, wise choice. Might want to check out Evotiva, a new guy on the block with some great values.
My favorite 'bargain' in amps is still the Proceed HPA-2, it's 95% of the Mark Levinson amps and can be had cheap, well below the $1,500 mark.