Audio Research LS 12 Preamp Characteristics?

It's one of the best preamps I have ever heard.

Etbaby - very well put; I completely agree with your assessment. I've only heard the LS12 in other systems but if someone was to give me one I certainly wouldn't complain (I would be in hog heaven).

Levchappy - I just purchased an LS12 here on Audiogon and I should be receiving it within the next week or so. Now I will have the opportunity to actually hear this unit in my own system and will be able to give you a much better idea of how this preamp compares to others I have owned.