AIYIMA DAC A5 Pro USB and optical coaxial S/PDIF inputs can select the input mode. With the volume control, which can adjust the headphones as well as the RCA output. Note: The Dolby signal input is not supported! Mini headphone amplifier adoption chips TPA6120 with headphones protect the circuit for all 16-300 ohm headphones. DAC A5 Pro can drive your headphones well, as a desktop DAC, stereo headphone amplifier and preamp. Samping rate: PC USB 24bit/192 kHz, optical/coaxial 24bit/192 kHz, USB digital audio amplifier, USB decoder of analogue analogue adapter and headphone amplifier DAC decoder. Min DAC simple and elegant design can support devices: mobile phone, tablet, computer, MP3, TV etc. Aiyima's outstanding brands customer service and warranty service, any doubts, please ask https://www.amazon.de/askseller? › See more product details Model: Size: Color: