I was playing around today with my rack gear, and used a rack-mount effects unit in the effects loop of my BMax. Then I started to wonder, could a tube preamp be put through the effects loop to offer some much needed warmth? In other words, would it work to run (2) preamps simultaneously? One into the effects loop of the other? I'm sure someone has done this before, or at least tried it. I would love to hear if it works, as I'm thinking about a tube pre, and if I could get a small one (like an ART MP or whatever) just to try, I might find that I like it...or not. Anyway, if you have any experience with this please share. Thanks.