Amaggie05,
The digital out to the benchmark sounds wonderful. Quiet, nice soundstage (wide and deep but not as wide and deep as my Esoteric X03-SE), nice detail and transparency; very musical and absolutely non-fatiguing; no digititis. You can hear the individual instruments and there is a bit of air around them. Bass and treble are very well extended and the low level detail is very, very good-none of the graininess I have read about. The upgraded CI power supply has a bit to do with it as well, I'm sure, but have not tried it without. The onboard dac sounded very thin, tiny soundstage and practiclly no depth. Almost no low lever detail and no where as much resolution as with the benchmark. Overall, just plain non-involving. It was better with the power supply (blackened the background and made it more musical, not as thin sounding, and added a bit low level detail). It is an incredibly good sounding source for me with the benchmark. I listen for hours. Without the benchmark, it sounded alot like my Bose Soundwave radio in the livingroom. With the benchmark, it sounds much better than the Meridian 588 I traded in a few years ago. I would strongly recommend anyone with a SB giving it a try.