Pure DAC vs DAC/Amp so what I can say is that They were similar in extracting detail. I had the Xfi unit so I had the Femto's in both. I did prefer my W4S but I attribute that somewhat to familiarity and that it did have the Vishay's in place already. It was more precise. I am really interested to compare the infinity once it arrives!
1/17/15 at 7:26am