Well, no, it's still digital, in that it's binary data. The point of I2S is to separate out the word clock, and there's still the concept of clocking with DSD, so I2S could easily be modified to carry DSD data, but it'd otherwise be the same, and have the same limitations. However, luvdunhill's other issues of not wanting to complicate matters with a buffer and/or amp are, of course, more limiting. And I doubt I'd get around to it first.