I'm with tgrisham, I also use a Modwright Line Stage with HT pass-through. I have a preamp-processor, and the front two channels go to the Modwright. It sounds crazy, but I use my 3C24 tube amp with HT, since it's sensitivity is about 8db lower than any of my other amps.
It also runs cooler than any other tube amps I've had, and it has turned out to be very reliable, so I keep it hooked up to my mains, so I don't have to constantly adjust the volume on my HT system.
My HT/stereo system sounds the best it has for many years, due to a new KEF center channel speaker, and the new (used) surround speakers (some nice Pioneer speakers that were designed by Andrew Jones when he was at KEF, they've worked out very well. The KEF/Pioneer speakers match with my 12" Tannoy mains due to them all being Dual Concentric drivers. Two subs are in use always, they help in my large room. When listening to Redbook CD's, with the Arcam AV-9 in 5.1 mode, I get very good simulated surround-sound from the HT portion of the system, the best DSP sound I've encountered.
Many of you will think me uncouth for listening this way, but it's really very enjoyable. For stereo only listening, vinyl is a great option, too.