I have a Brystion 4B NRB amp paired with a Audible Illusions M3A tube preamp and it sounds fantastic. I like having the tubes in the preamp section as opposed to the power amp because I enjoy the benifits of the Brysyon, such as plenty of power to run my rather inefficiet speakers, the quickness of the amp and the powerful bass that I get from it. The Audible Illusions mates well to it and brings a nice smooth sound to my system. It is not a real "tubey" sounding preamp, but it is very neutral sounding and brings plenty of "air" and "body" to the music. If you are into vinyl, this is a must have preamp. Good luck on your search.
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