i know this is an old question (i saw a manufacturer mention this in Stereohile as early as '88) but i'm wondering why more companies don't use a RAM-based buffer to reclock a digital signal before the DAC, thus making jitter from the transport irrelevant (at least in theory). i know the Chord DAC and maybe a couple others do it, but why is it not done more often? besides the slight time delay i don't see any drawbacks of this approach. does it not work as well as i think it should? i did a couple searches on the topic but didn't come up with much.