iFi Audio xDSD Gryphon Portable DAC and Headphone Amp
The Best Portable DAC Dongles For Android - Major HiFi
iFi xDSD - Portable Bluetooth aptX DAC and Headphone Amplifier, with MQA and DSD. Use With Smartphones/Tablets/Computers/Digital Audio Players, Via Coaxial/Optical/USB (Standalone): Amazon.co.uk: Electronics & Photo