yah he can make a box for just about any tube mic, and obscure mic that needs different power. Not tube mics, but he made me a small rechargeable ps for a pair of schoeps cmc3pd's that I have that take a -12v ground positive phantom.
my dream is for one for my u67's which he has been thinking about a design for for some time, they are a tricky mic to power, BUT, if anyone is going to figure it out he will, so email him and see what he can do for you!!!