PWD2 was fed balanced into the Mojo and singled ended into the S7. I've never heard a reliably discernible difference between the balanced and SE outputs of the PWD2 with amps (BA, Mjolnir, etc.) that offered both inputs. Maybe a bit more detail or resolution, but that's about it. But still in the same league. In other words, a PWD2 single ended is still more resolving than most of the other DACs in the comparo.
Edited by purrin - 2/7/14 at 9:10pm