For me the PiFi runs under OpenELEC. I am particularly pleased with the crystal clear sound with respect to the output of 3,5er Raspi2. In addition, stereo effect better, more virtual sound sources and even cheaper content with low bitrates sounds better.
Commissioning expires perfect if you follow the instructions of the DAC + Hifiberry for OpenELEC.
A must for every audiophile music listener and fan of Stereofonie who uses the Raspi as Media Center.