Any preamp can integrate with HT. I'm running a Shindo Aurieges, about as 'pure' as you can get and it's in the mix with my 2 channel and surround sound set up. You just need an empty jack on your preamp to run your pre/pro into, then level set the volume on your preamp to match your speakers in surround mode. When you switch over to HT, set the volume on the preamp to the level-set position and you're good to go.
The quality through your mains may be marginally diminished, but I haven't noticed nor feel like I'm missing anything
The quality through your mains may be marginally diminished, but I haven't noticed nor feel like I'm missing anything