FiiO E7 Portable Headphone DAC Amplifier

FiiO E7 USB DAC and Headphone Amplifier The Fiio E7 is a great little device that is designed to give your PC sound card an extra kick! Ever noticed a lack in quality even though you have high end headphones!? The Fiio E7 has the answer! Your Fiio E7 has the ability to decode your audio amplify it and output a better quality audio for you to listen to! Acting as a professional headphone amplifier and an external USB soundcard your FiiO E7 bumps up your audio quality in an instant - Plug it in and your off! Main Features： USB audio decoding and output for PC functioning as a high quality external USB soundcard*; Texas Instruments' PCM2706 serves as USB receiver. For better sound quality a Wolfson WM8740 serves as digital-to-analog convertor (DAC) pairing with a high performance operational amplifier from ADI for the DAC circuit; Build-in headphone amplifier utilizing AD8692 and Texas Instruments' TPA6130A as pre- and power-amp for high performance good resolution low distortion and powerful output; Standard 3.5mm stereo line-in jack for portable amplification with conventional audio source; Dual 3.5mm headphone output jack. Convenient design makes it easy to share music between two listeners; World's first portable headphone amplifier with dual colors OLED display; Easy to use digital volume control function with great precision and channel balance; Build-in EQ for 3 levels of Bass Boost; Build-in rechargeable 1050 mAH Li-ion battery for 80 hours of continuous operation**; Specialized dock for connecting E9*** to experience an even higher performance; Quality anodized aluminum satin finish case design small and compact ideal to be wrapped together with digital audio player; User selectable USB charging function to help prolong battery lifespan and lower distortion from power supply circuit; User definable startup volume memory and maximum volume limiter to protect user from hearing damage due to loud volume; Automatic keylock feature; User definable sl