Not sure how "all out" its going to be, but I'm not going to experiment with a couple of configurations. First, a simple switch arrangement. Then I'm going to experiment with Hg wetted reed relays. No idea if it will actually be better than simple switches, but what the heck. Excuse to play! Do you have any experience with Hg wetted relays?
Thanks for your observations on the F2. Yes, I've considered that, and its not the "be all, end all" project, by any means. I chose the F2 because of its simple circuit topology. Being so simple, it will give me the opportunity to experiment with different parts. I eventually want to step up to an F5, but I want to have some experience and understanding before going there.
Mr. Pass is certainly a gift to both the DIY and audiophile communities. He certainly has a passion for sharing!
Thanks again for the input!
-michael