need an A/V amp for my thiel CS 2

I know nothing about the seller, and I haven't heard this particular model, but Classe' is usually a good fit with Thiels. I suggest you keep an eye on this auction:
http://cgi.audiogon.com/cgi-bin/auc.pl?ampsmult&1301449931

Got some mail from Thiel. They recommended the Arcam av 400 and the NAD. The Arcam goes for $2,500. The Nad has several models. The Arcam is a little over my budget. I was thinking of a 100w -150w /channel AV amp. Have anybody heard Nad or Arcam with Thiels???

I need 5 2 front, center and 2 rear.

I'm still confused, how many channels of amplification do you need?

Anthem is always a great buy for the money. At 200 watts for under $1000, how can you go wrong? For a little more, I really like a 200wpc Sunfire. With the Thiels, I would keep the power up there. 100wpc probably won't cut it, even with a mac or B&k. There's soooo many 5 channels amps in your range.

I will be driving multi channels (center, front,and rear ). I also failed to mention that I own a Counterpoint SA12 (100w) and a SA 3 preamp. The Pre amp needs new tubes and the amp probably has a blown Trans. I would suggest it will take about $3k to get them fixed/upgraded. That would be nice but they are not A/v ready. Currently I'm using a 2004 Pioneer Elite AV mult channel 100 w amp., but the sound doesn't blow me away when I listen to cds. As you can see I have a dilemma. The Counterpoint are sweet to your ears but doesn't solve the AV part of the equation. However, if I expend in a nice AV amp with good sound quality, maybe I will reach mymusic Utopia. Any suggestions as to which amp can provide the best of both????

What Mds said: Do you need an AV receiver or just a power amp? How many channels? Even though 5-6 ohms is doable for most AV amps, if you are running a center and rears, Yamaha and some others need 6 ohm minimum for multiple channels.

Are you looking for a multi channel amp or stereo amp?

I owned CS 2's for many years and tried quite a few different amps with them. The CS 2's with their 6 Ohms nominal/ 5 Ohm minimum impedance, are probably the easiest of all Thiel speakers to run with tubes, but with your budget and what I perceive from your thread to what your seeking, your probably better off with ss.
The top end needs to be monitored, any amp with a rising or hot top end should be avoided. At the opposite end, the ported bass, though fairly well extended can be a bit soft.
Within your budget:
My first pick, if you could find one at a price you'd feel comfortable with is Threshold S/500, preferably one that has recently had new caps and re bias done by somebody reputable like Jon Soderberg of Vintage Audio Repair.
My second choice would be a conrad-johnson MF 2500 preferably with the A upgrade.
These speakers need quality amplification. don't be afraid to spend money on the amps. It might be a bit nonconventional to spend so much on the amp to speaker ratio, but the combination will yield results that reveal the true value of the combination.