Don't understand the whole home theater bypass concept to begin with....just seems additional unnecessary gear....
Some people need a preamp with H/T bypass - fortunately my 20+ year old Nelson Pass designed Adcom GFP-750 already had one - this is why I need it in my system:
I use the 7.1 surround outputs from my Oppo BDP-105 for surround decoding - like this:
2 Channel (use only 3 components)
Oppo XLR Outputs -> Adcom Preamp Balanced inputs -> Stereo Amplifier Balanced inputs -> L/R Front speakers
Home Theater (switch on H/T bypass - use all 4 components in my system):
Oppo L/R Front RCA Outputs -> Adcom Preamp HT bypass inputs -> (same as 2ch) -> Stereo Amplifier Balanced inputs -> L/R Front speakers
Oppo-> Center / Surround channel RCA Outputs-> Multi-channel amplifier -> Center / Surround speakers
Oppo BDP-105 Disc / Stream
Adcom GFP-750 Preamp
Bryston 4B-SST2 Stereo Amp
Outlaw (ATI) 7700 Multi-channel amp