I have the Ah! and a Rega Planet going into my Xtreme Monoblocks through a passive preamp (Monolithic Audio). Both are in the same price range $800-$1000. The Ah! is a DIY'ers dream, even comes with a set of Torx wrenches so you can get inside it and play with the tubes. The Rega has an elegance all of its own. I slightly prefer the Rega for musicality, but the Ah! is warmer because of the tubes. Also, you get to roll the tubes in the Ah!, guaranteeing that you will spend hundreds of $$ in the future trying to find the 1960's vintage tube that sounds great to you. Honestly, give both of them a listen with the Odyssey setup, the synergy is excellent.