Best Amp with Magnepan 3.6's


Greetings - I currently own a pair of Magnepan 3.6's and am looking for any suggestions on an amp that would help me get the volume/sound I am missing.
My current systems is as follows:
Magnepan 3.6's
Rotel 1057 preamp
Rotel 1080 (200x2) amp
NAD 525BEE CD player
JL audio F110 sub
Transparent interconnects, and cables
As you can imagine I am not getting near the volume I would expect out of these 3.6's because of the limited power of my Rotel amp. I have researched different amplifiers and have it narrowed down to 2 (although I'm still open to suggestions). I've been looking into a Bryston 4B SST or a McIntosh MC402.
I would greatly appreciate any input or suggestions you may have. Thanks in advance.
gbowman11
I am driving my 3.6Rs with Classé CA-M600 monoblocks at 1200 watt/4ohms fast, smooth, quiet, airy and
wonderful!
Just hooked up my new Wyred mAmps to my 3.6s.
Great bass out of the box with a deep soundstage. Can't wait for them to settle in after a couple of hundred hours. The sound is already very smooth and articulate and should only get better. Pretty incredible for $1800 a pair!

I have 3.6Rs and using Emotiva UMC200 pre/proc and an Outlaw Audio 7100 in a 14 by 14 foot room. So I don't need to turn the volume up to massive levels. The amp will do 100 watts per channel into 8 ohms and 165 watts per channel into 4 ohms. I have been thinking of getting a separate two channel amp for the 3.6Rs. I have read that it takes lots of current to get the best soundstage with instrument placement and depth. I am getting wide soundstage and good sound, but the depth is somewhat muddied enough to not get instrument placement. I am looking for a two channel amp that will give me more of the potential of the 3.6Rs, but be able to be purchased for less that $750 used.  Is there any amp that will be worth upgrading to for that kind of money or do I need a new pre/proc as well?