Dave; I don't think you can go wrong with the odyssey amps as Klaus is very straight shooter in Audio;in my opinion he is the solid state version of Ralph from Atmasphere audio; probally 2 of the best guys to deal with in audio as had been my experience.
integra dhc-9.9 or onkyo pr-sc866
looking at the specs, these 2 pre-amps seem quite similar but the integra is about 50% more than the onkyo. there is not much written about the onkyo? Does anyone know about it? I plan to use it with a 5.1 magnepan 1.6r surround system and either odyssey stratos htc-3 + khargo amp, a parasound 5250 or at-1805?