Mic Pre
Audio amateur recently published an article about a tube mic preamp by Paul Stamler(2/3/4, 2002). It seems to be quite a high-end thing. He also did a two part article in AA in Issues 3 & 4, 1995. This one was about solid state circuits for mic preamps and mixers. Very good article with much discussion about the design decision-making. Stamler is obviously a very knowledgeable guy. Highly recommended reading.
Back issues from Audioxpress.
I want to do one (or a few), but can't yet start since I've got other things underway.