This is the iFi audio iDSD nano. A USB cable is included. The iDSD, when paired with an iPhone, iPad, or Android device, as well as on a computer, becomes a high-end audio source. It can reproduce all formats with amazing quality: PCM from 16/44kHz to 32/384kHz DSD up to 11.2 & 12.4MHz DXD up to 384kHz How about using it with your smartphone or in your car? [Brand] iFi audio [Category] Headphone Amplifier, DAC [Condition] No noticeable scratches or stains [Color] Silver系 (Silver-toned) Thank you. Mobile DSD Headphone Amplifier nano iDSD Product Description, Instruction Manual https://ifi-audio.jp/legacy/nanoidsd.pdf Yu-Packet Post