Finally had some good listening time with the ART SB3 and am happy to report it is an improvement over the stock unit and my own lightly modified unit in every aspect. I hear a deeper soundstage, better separation between instruments, finer high frequency detailing, better low level resolution (lower nosie floor) and an overall less digital--more analog like, relaxed sound. I only auditioned the unit's digital out--I did not use the analog out as my pre/processor only accepts a digital input. Great job, Pat.
Chris