Ditto the suggestion for Brent Jesse's informative website. He's also a very good source for reasonably priced, high quality tubes, as is Andy at Vintage Tube Services.
BTW, don't stop with just getting a tubed preamp... you have to go the full distance and switch to a tube amplifier. Trust me... once you try a decent tube amp, you won't ever be satisfied with solid state.
BTW, don't stop with just getting a tubed preamp... you have to go the full distance and switch to a tube amplifier. Trust me... once you try a decent tube amp, you won't ever be satisfied with solid state.