Z Review - ifi iDSD Black Label (Chord Killer) - YouTube
iFi Audio micro iDSD Black Label Desktop/portable USB DAC/preamp/headphone amplifier at Crutchfield
iFi micro iDSD Black Label Portable DAC and Headphone Amplifier" A review by Audio46Headphones. - iFi audio
iFi iDSD Black Label: Swiss Army knife utility, top tier sound and flexibility that does everything extremely well, so much value it's just unfair to the competition – Audio Primate