[Barhab]

Well you know .. the thing is that you're jeopardizing Tube-Tech's capabilities only by running it through Digi001's [bleep] converters (no offense Digidesign..but I guess you agree). Buy some Swissonic converters, which are cheap and rival Apogee Rosetta! Swissonic AD24 should be a good choice and you can connect it to Digi001's ADAT input - the Swissonic WD8 would also be a good choice as masterclock, which would reduce jitter even more