Fiio E1 Headphone Amplifier for iPod & iPhone, 10Hz to 80KHz Frequency Response,Black

The Fiio E1 Headphone Amplifier (Black) is designed to work with the Apple iPod and iPhone. It features innovative in-line remote control functions and an integrated, high-quality Texas Instruments IC headphone amplifier. The E1 is cleverly designed to use the line-out signal from the Apple 30-pin docking port. This provides better sound quality and makes the amp able to drive high impedance or low sensitivity headphones - giving you the clarity and punch to make your music sound alive and vibrant. Plus, with the in-line control functions, you can easily operate the playback of your iPod or iPhone from the E1 itself.