iFi Audio Go blu Portable Bluetooth DAC/Headphone Amp

aptX Adaptive and aptX HD LDAC and HWA/LHDC regular aptX and aptX Low Latency AAC & SBS (Plain Vanilla Bluetooth) Please check the product box for the iFi Audio provided manual with instructionsYou may also like iFi Audio hip-dac 3 Portable USB DAC & Amplifier.