iFi audio Micro IDSD Black Label - Portable DAC/Headphone 303014
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
iFi Micro iDSD BL Review and Measurements | Super Best Audio Friends
iFi nano iDSD Black Label Portable Headphone AMP/DAC
micro iDSD Black Label by iFi audio - USB DAC and Headphone Amp for Home and Portable