I run the same system with respect to pre & power. Other pieces are a Jolida CDP & Snell Type A speakers. I'm not noticing any veil at this point, but this is always subject to change I suppose.
One large step I experienced toward clarity & transparency was the addition of VH Audios silver ICs (DIY). Big change for the better.
I'd agree with treating the room. You have a large room & no doubt have some acoustic issues to deal with. With the $2K you have available you, you could "do" the room and probably have some money left...depending on your approach & extent of the work. Consider it an large-positive investment in any system you run now or in the future.
Here's a few references to get you started:
This one is for a home theater, but his approach is fairly typical.
http://www.sbrjournal.net/journalsite/archives/acoustics/acoustics.htm This next one is a great resource, scroll down to the bottom for research links:
http://www.bobgolds.com/AbsorptionCoefficients.htmHere's a DIY approach to bass traps:
http://forums.studiotips.com/viewtopic.php?t=535Ethan Winer is a great resource (he hangs out over at the Rives forum on AA). He sells "Real Traps", but also tries to educate people...never met the guy, but he looks to be an interesting fellow:
http://www.realtraps.com/articles.htmHere's a white-paper...blue-paper I guess that he wrote that can get you started:
http://www.ethanwiner.com/acoustics.htmlAnd his home page:
http://www.ethanwiner.com/That should keep you busy for a while. There are many sources for room-treatment panels, corners, diffusors...do a search on A-gon & you'll find them. Or find a consultant and see what he/she thinks. This is one area transcends equipment mixing & matching & makes anything sound better...and it's logical why this is the case.