Posbwp555 regards to you. conerning the dac replaced. I recently had the magnificent p03/d03/Gos combo. A fabulous system. I decided to try the metronome kalista transport, and remembering the great Jerry Ozment I purchased the latest audiologic 34mxl also magnificent but different as tube tech goes. the Esoteric was very dynamic, precise and musical but could sometime come of as a tad analytical and maybe a tad dry.I suspect that a very good tube pre could alleviate that perception. At the time I was using that excellent Music first audio tvc based passive. The audiologic is wetter and very musical and competes with cost no object dac's. This craft and pursuit never ends, and that is what makes it so much fun. We are big boy's playing with big toy's If we get to serious then it is time to pursue other endevors.Btw I have a new toy coming today, tha accustic arts dac-4. Wow! I wonder how that will perform with, THE KALISTA. CHEERS