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) by Abbingdon Music Research

WIRELESS OR WIRED - Improve the sound from any smartphone, laptop, tablet, or DAP to your wired headphones with a built in CD quality Bluetooth streaming receiver, or connect directly to your USB device with an Android OTG cable or Apple Camera Connection Kit. S/PDIF, optical, toslink, and coax are options as well. Our S Balanced 3.5mm headphone output brings the benefits of the balanced connection to single ended headphones and cuts crosstalk POWERFUL AMPLIFIER - Experience the full dynamic range and unleash the full potential of your headphones, 32ohm to 600ohm, with an impressive Dual-mono headphone amplifier consisting of 500mW of power per channel. Make sensitive IEMs super quiet thanks to our Cyberdrive circuit design that puts the analog volume under digital control for the best of both worlds, while retaining full bit resolution at all volume levels. HIGH RESOLUTION AUDIO - Playback any hi-res audio format natively with our signature Burr Brown digital to analog signal processing chip, which means file formats or information remain unchanged for the truest sound. Supports native PCM 384 quad, DSD 256, and MQA straight out of the box, or choose high resolution audio up to PCM 768kHz and DSD 512 with a quick firmware update PORTABLE DESIGN - With an internal Lithium Polymer Battery, playback time is up to 6 to10 hours, depending on the headphones you are driving and what settings you enable TECH PACKED - Low end bass frequencies are no problem thanks to our XBass + analogue bass correction system which corrects headphone bass frequency to deliver a deep, tight and prodigious bass. You will feel the music all around thanks to the wide soundstage from our 3D+ Holographic dual-analogue matrix create a more immersive, deeper soundstage that puts the artist with you in the room, not just in your headphones