Audiophile pre-amps with home theater pass through


Hello,
I am aware of conrad johnson and the new PS Audio pre-amps that have a theater pass through.
Does anyone know of some other quality pre-amps that have this feature......in the $2000.00 or less range?
thanks,
Dewmonster
dewmonster
Adcom GFP 750 (good) at about $700 =/- used, or Muse Model 3 Signature (significantly betters the Adcom) at about $2300 new (you will not likely find it used). The BAT SS pre amps like VK40 I believe have it, and the tube units have the unity gain as posted above - be sure to ck features on the specific model you are looking at. It is a great feature if you only have one listening/HT room.
Proceed PRE is a good ss preamp w/ pass through and is selling very cheap used now since Proceed is being incorporayed into the Levinson line.
Can someone elaborate on what the unity gain feature of the BAT pre's is/does and how it relates to integrating a home theatre system into a two channel hi end system?

thanks