???High Resolution???Converts digital audio to 3.5mm analog audio or Optical digital audio, supports up to 192 kHz 24 bit high resolution sound source, supports high resolution 44.1 kHz 48 kHz 96 kHz 192 kHz/16 bit, 44.1 kHz 48 kHz 96 kHz 192 kHz/24 bit audio decoding. ???Convenient Compatibility???No need to install any driver, plug and play, it can be used in smartphone, tablet, computer, PS4, PS3, etc. This product has a built-in microphone, which can support computer network conmunication and recording. ???Used for the devices that output USB audio???Used for the devices that output USB audio, like PC. Note: this DAC can NOT be used for the device that can NOT output audio from USB jack, like TV. ???Two Output Modes???It can output analog signal and optical digital signal from 3.5mm jack. It is analog output mode when connecting with headphone, you can listen to music just plugging in headphone and speaker. It is Optical digital output mode when connecting with fiber optic cable, at this time, you can play 192khz 24bit music from computer, mobile phone and tablet via HIFI home theater. ???Excellent Design???High quality aluminum alloy housing overall shielding without noise and signal interference, its temperature won't rise even if it have a built-in amplifier and play for a long time, only 0.39 ounces weight and 2.3 x 0.73 x 0.34 inches external size, easy to install.