Congradulations on your new Ref 3. I second Oneobgyn's statement, it is also the best preamp that I have owned.
Out of curiosity, did it come with the 6550 tube? I only ask because my experimenting with it seemed so much different then Oneobgyn's. I felt it degraded the sound, my dealer felt that it didn't change the sound, and Oneobgyn felt that it was a significant improvement. I am tempted to send the tube back in exchange for another, or at least have ARC test it and make sure it wasn't a bad tube.