ifi micro idsd black label dac and headphone amplifier/preamp with mqa and dsd. desk and portable use with smartphones/daps/tablets/laptops, via usb/spdif/coaxial/optical / 3.5 aux/rca - Walmart.com
iFi Nano iDSD Black Label: great genes in this DAC family, wallet happy price – Audio Primate
iFi Nano iDSD BL Portable DAC & Headphone Amplifier with MQA at Sight+Sound Gallery | an Audiophile's paradise
iFi Audio micro iDSD Black Label Desktop/portable USB DAC/preamp/headphone amplifier at Crutchfield