Berkeley Alpha Reference run direct


Has anyone found a preamplifier that improves the sound from a Berkeley Alpha Reference DAC? If so, what preamp? Mine sounds amazing feeding my amplifiers direct, DAC to amps.
imgoodwithtools
I contacted Galen Carol Audio yesterday. I had auditioned and purchased my BAR from them, via mail. I was curious how they set up their demo BAR. In their showroom, they are running direct into a pair of Rowland amps, with no preamp. They said some customers prefer a bit of "flavor", and in which case they would recommend a tube preamp. But for their demo, they consider no additional circuitry between DAC and amp to be the best platform to hear the merits of the Berkeley Alpha Reference. Interesting...
I would LOVE to hear that dac direct to Jeffs amps.  Galen is a great guy, by the way.  
imgoodwithtools

Other than price, have you considered using an Ayre KX-R Twenty with your MX-R Twenty amps instead of the ARC Ref 6?