Dev. I owned the ARC CD3MKII and used it as a transport for an Audio Logic DAC. I bought the AA transport and dac after having spoken with Teajay about his experience with the units. The AAs are clearly superior for the ARC alone, or as transport for the AL (I thought the ARC/AL combo was an improvement for the player alone). So overall the change in equipment was well worth it. The AA may have limited distribution in US (big in Europe) but it sure is a great piece of digital equipment. Unlike Teajay, I did not compare with DCS,Meitner,Esoteric, etc - but frankly, with stuff this good, I'm satisfied (at least for a while). I'm glad I sold my ARC transport before receiving the AA, because I suspect the ARC is indeed an excellent transport in its own right, and does provide cd player capability should something happen to you DAC. I guess what you are hearing in the signficant superiority of the AA DAC chipset and process prowress, whereas the improvement is not quite so great on the transport side. I suspect, hope, that the AA transport does offer improvement over the ARC feeding its sibling, but in then end I would probably keep the AA transport anyway (if I still had the ARC) since the transport and dac look so darn good together. Well anyway, welcome to the small, but growing AA club.