I use the assemblage model (same unit) and it has done wonders for my system. It not only reclocks the signal from my old sony es 5 disc player but changes its toslink out to a coaxial cable into my McCormack dac deluxe. It lowered the noise floor, decreased treble harshness, expanded the sound stage and made my digital source sound very close to vinyl. Some of this is due to reduced jitter and some due to the exchange of a good toslink for a better coaxial cable. I expect it will improve older transports and dacs that don't reclock the incoming signal. If you have a state of the art newer digital source that already does this you probably won't notice as much improvement as I have.
