200w/ch stereo amps: best 1 for under 2000 used?


Looking to get 2 stereo amps of around 200 watts/channel, and under $2000 used. That puts several amps into contention:
Krell KAV-250a
Byrston 4B ST
Levinson
Classe
Jeff Rowland?
Muse
Boulder?
others?
are there any tube amps to consider in that price and power range?

The amp will be paired with a Sonic Frontiers Line 3 preamp, and drive dynamic speakers that are not too efficient (87 db) with a 6 ohm nomial (4 ohm minimum) impedance, in a fairly large room (16ft x 45 ft x 9 ft)

I'd like to know what people think? I've been generally thinking of the KAV-250a and Bryston, but have seen other amps come up that seem interesting a potentially good value? What do think would be a good buy in the price range and in the application?
lotusm50
Hi, Lotus: I am a very satisfied owner of the Bryston 4B-ST, and can heartily recommend it. If you decide to buy the 4B-ST, drop me a line and I will give you contact info on the dealer where I bought mine at a substantial discount (less than $1800 for a new unit).
The McCormack DNA-1 puts out 185 wpc 8 ohm and 370 wpc 4 ohm and can be had for well under $2000. (used), and is a great sounding amp. And the Sonic Frontiers Power 2 at 110 wpc is a powerful sounding tube amp that would mate well with your SF pre-amp. It should be available for around $2000., also used. If you want a really powerful good sounding amp, the McCormack DNA-2 (300 wpc/600wpc/1200 wpc)can sometimes be found for around $2000. You've got a big room. Good Luck. Craig
Gotta second (third?) the first two posts, Bryston 4BST is a phenomenal amp for the price, BAT VK200 is incredible as well although rated at "only" 100 WPC. I have owned both and feel that the BAT is overall more musical, but the Bryston is more powerful (but not as much as you might think) and has a better warranty. You can't go wrong either way.
I used to own a Levinson #23 which was excellent. I now
use a 27.5 which is lower power (100w/chan) but somewhat
more transparent. The #23 is very stable into a variety
of loads, good imaging and soundstaging and smooth.