FiiO E18 KUNLUN Android Phone USB DAC & AMP The Ideal Partner for Android Phones Music Sounds Better than Ever: You love the convenience of listening to music with smartphones USB DAC & Amp Tailored For Smartphones: E18 can work with smartphones with USB OTG function. Connected via Micro USB OTG cable, The E18 would first decode the music stream, then amplify it. The E18 can even remotely control the playback of songs on the phone Mobile Power Supply: The E18 can also serve as a mobile power supply to charge the phone, so you are totally free of worries of running out of battery when listening from your phone USB DAC & AMP for Computer (96khz/24bit): The E18 can also serve as a great USB DAC & AMP for computers. Connect the E18 to your computer, grab your headphones and enjoy the music Portable Headphone Amplifier: The E18 also has a line in port to connect to other players, Serving as a dedicated headphone amplifier in this configuration