Hi! I'm in need of a really transparent preamp. As I mentioned in the MKH 20 thread I have read very serious tests of the Earthworks preamp, and i know that it is (very very close to) audibly transparent. But it's still IMO pretty expensive. What other similar and less expensive products are there on the market? Note that I'm not interested in "sweet" or "nice" sounding preamps, I want it as transparent as it gets.