Pre with Pass-Thru for HT Processor

I'm turning to the experts, in search of some advise and opinions.

I'm looking for a good Pre (would like to stay under $1000, if possible) with balanced ins/outs that has a direct "pass-thru" option for use with HT processors. ??? Thoughts ???

I'm only superficially aware of features like "unity gain", etc... So any information, and or opinioins would be greatly welcomed!

Thanks!