I like this idea.
Interesting, if I didn't already have a CL-Z I think I would buy one of these! Good food for thought tho', thanks, Mudd!
I've been using a FETHead, a very similar gadget. Works well with a T-Bone RB500 (ribbon - modified) and also gives a stock SM57 a bit of 'life'
As said by 'bcgood' on gearslutz, "...
a class A discrete FET pre that runs off of 48 V. Seems like a good deal at $99".