iFi Audio Zen Blue is a bluetooth receiver and dac, to receive bluetooth and send it in the highest quality to a amp, dac, stereo or powered speakers.
iFi Zen Blue uses a quality ESS dac to process the music and provide great sound quality. iFi Zen Blue can connect over blueooth with iphones via the AAC codec and with newer android phones via the similar apt-x codec, as well as the higher resolution apt-x HD or LDAC codec for even better performance, as well as the new HWA (LHDC)