This is a good question. I understand what @bmichels is saying and I believe he is right but on the TotalDac website, it says it has an "embedded reclocker". Should you decide to go with this option, you would have the option of using a USB Regen by Uptone Audio between the Server and DAC which could probably effectively take the place of the reclocker. @preproman tried this and didn't find a difference between the two. The only problem with the d1-integrated is that it is underpowered. It will not drive the Abyss well.