New power amp for Quad 11Ls

I've been reading up on the PS Audio A100 and think I'll go with it. I also think I have a better sense of what I'm looking for and wonder whether adding a power amp will help. With my current setup, the sound really opens up at higher volumes. Will a power amp give me this effect--a more open sound and better speed and dynamics--across the full volume range?

The a25.2 is 50 wpc; the room is 12 x 25 (with two large openings). But I'm not looking for more volume so much as clarity and low-end definition. I can't swing a sub in the room right now (the kids would be climbing on it constantly), but I'd like to in the future, and the a25.2 only has a set of preamp/sub outs. (You helped me figure this out on another thread, Bob; thanks again).

Thanks for the ideas. The A100 looks like a good bet: a lot of flexibility (sub, new preamp, bi-amping), and, if I get a good deal and it doesn't work out, I can probably sell it pretty easily and try something else!

I should clarify, too. The room is relatively large, but the listening position is roughly what Frihed90 described (sitting 10 feet away with the speakers 8 feet apart and the speakers 3 feet out from the wall).

The idea behind my question was whether, given the Quad 11L's 86dB sensitivity, moving from 50 wpc to 100 wpc would get more out of them. Some posts on this thread and others suggest that it would. But now I wonder whether I'm really just looking for reasons to buy a new amp .... Nothing wrong with that, I suppose, but it's not what I intended.

Well, I went ahead with the PS Audio Trio A100. I'm glad I did. I got a good enough deal that I figured I couldn't lose money, and I like what I'm hearing. Improved clarity, detail, and transparency. More bass definition as well; this is the one area where the change has made the limitations of my little speakers clear.

All the feedback was helpful, thanks, and so was this thread:

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1257968025&read&3&zzlDante7&&