Best balanced linestage/preamp for $4000 or less ???


Hey all !!  So I need some help with choosing a preamp, preferably tube, that's a true balance design in and out.. For a 2.1 speaker system.. Need a sub so it'll have to have dual outputs running in parallel if that's the right term to use.. It'll have to have single ended inputs and outputs also.. I use an Oppo205 (Modwright) in the front end for everything digital coming in, movies and music.. But I do my critical listening with music so I use the modded portion of the 205 for that (balance output) and for movies/tv want to use the unmodded single ended outputs..

I have a Classe CA2200 amp and Salk bookshelf speakers and a sub (single ended input)..

I know BAT is out there.. VK31se I'm looking at and some older Audio Research but read them are unreliable.. Anything else anyone else have some experience with ? Will take your opinions seriously as that's how I chose my current equipment...   thanks

I know there's some good stuff single ended but I really want a well balance system through out with my music listening..

oem-wheels
Atmasphere - do manuals generally indicate if the equipment meets the AES 48 standard?

oem-wheels - in similar discussions two other pre-amps are mentioned - don Sachs ($2500 new) and cary sl-05 (~$3100 used).  No idea how these stack up against those mentioned above, but I am doing a similar search and keep coming back to these, but now have more to look into!
@thosb   I've looked at those and they do look good but pretty sure they won't be able to drive a sub also.. I actually called Sachs.. The wait time to get one of his is 16 weeks, approx..  could be more, could be less
If you can find a Vincent SA-T8, swap out the crappy supplied Tubes and Caps, and you'll have a superb Balanced Pre. that will send plenty of high cost Pre's packing.
Atmasphere - do manuals generally indicate if the equipment meets the AES 48 standard?
@oem-wheels 
Probably not. I would contact the manufacturer. It they can't simply say 'yes', the correct answer is likely 'no'.
ok guys... thanks for taking the time in helping me out.. from all mentioned there's 3 that seems like fits my taste.. 1 of them hasn't been mentioned here, found by mistake.. Atmosphere, Rogue (thanks ggc), and Wyred 4 Sound's STP-SE level 2 (one that wasn't mentioned).. Called Atmosphere for more info and found that it would cost me about $1500 more than my current budget.. Rogue's latest is about the same price for their top of line.. Talked to them too and they said the latest preamp would work better for me than the one being sold used on Agon..  The STP-SE found a very nice review on 10 Audio.. He liked it so much that he said he bought it.. I know its not tubed but still even with all the upgrades its still under my budget.. And it can do what I need it to do very well.. Right now I have my modded Oppo205 hooked directly to my amp and it sounds very nice in 2 channel.. But I still like to have a preamp to switch sources, add a sub, volume control, balance.. 


I said screw it couple days ago and almost bought an Audio Research 27.. the guy assured me it can drive my amp and sub.. made an offer $100 less than he was willing accept so it stalled.. After more research I found out that Audio Research doesn't recommend anything lower than 25k ohms to pair with this pre..           close one