If you're looking to inject a bit of tube warmth and fullness into your system the Rogue may be a good choice, and they offer great customer support. If you're looking for something that walks the line more between tubes/ss I'd look at Sonic Frontiers, although they're out of the tube preamp business and I've heard their warranties don't transfer(assuming you'd have to buy one used), so that might be an issue. Likewise on the ss side the McCormack is very full and smooth sounding and is a nice compromise between ss and tubes. On the more neutral and detailed side of ss there is the Adcom GFP-750 that can run balanced or single-ended, active or passive, and it allows you to control L/R balance with the remote(as does the McCormack--very useful). There are obviously many more options out there, but these are the units I would look at first given your cost constraint and the need for an HT passthrough.
Just a word on the Adcom as there are some issues: Although sold by Adcom the unit was designed by Nelson Pass(of Pass Labs), and although not up to a full Pass Labs design standard(or price) it is a very good unit at its price point(around $1200 street price). Some people deride this unit because of its controversial Class A rating in Stereophile, and whether it belongs there or not it still offers a lot of performance for the money along with several nice features(mentioned above) and an HT passthrough. In my system it was very transparent and dynamic, offering an open window on the performance(i.e. it got out of the way of the music). Early models had some problems so I wouldn't buy one used and I'd want the full warranty, but given all that it offers I'd say it's worth an audition if you're looking for a more neutral sounding preamp and if you have a dealer nearby.
Hope this helped and best of luck.
Tim
Just a word on the Adcom as there are some issues: Although sold by Adcom the unit was designed by Nelson Pass(of Pass Labs), and although not up to a full Pass Labs design standard(or price) it is a very good unit at its price point(around $1200 street price). Some people deride this unit because of its controversial Class A rating in Stereophile, and whether it belongs there or not it still offers a lot of performance for the money along with several nice features(mentioned above) and an HT passthrough. In my system it was very transparent and dynamic, offering an open window on the performance(i.e. it got out of the way of the music). Early models had some problems so I wouldn't buy one used and I'd want the full warranty, but given all that it offers I'd say it's worth an audition if you're looking for a more neutral sounding preamp and if you have a dealer nearby.
Hope this helped and best of luck.
Tim