I have been looking at stereo pre-amps with HT bypass for my two channel. Two channel just doesn't seem to be a priority even on the best HT preamps.
These two passive preamps are on the top of my list. I have the Channel Islands DAC and what it does for two channel is just amazing.

Channel Islands PLC-1
http://www.ciaudio.com/
Goldpoint SA-2
http://www.goldpt.com/