FiiO E3 Portable Headphone Amplifier

The E3 Portable Headphone Amplifier from Fiio is a compact and portable headphone amplifier that allows you to increase the play time of your music player and improve the audio quality. It also has a bass boost function for enhanced bass. The amplifier has standard 3.5mm input and output connectors, providing compatibility with a variety of headphones and music players. Simply place the amplifier in the signal path between your music player and your headphones. The E3 operates on a single AAA battery and provides up to 20 hours of playback.