The VOX amPlug Series of palm-sized headphone guitar amplifiers enables musicians to easily plug their amPlug into any guitar, and attach a pair of headphones to achieve high quality guitar sounds anywhere. Now, amPhones make it even easier for you. While the amPlug required the user to provide the headphones, the amPhones are headphones that have the amPlug technology already built in! Just plug in your instrument, and enjoy serious guitar/bass sound and superb comfort. amPhones are created using headphone technology from Audio-Technica, the name you trust for headphones. amPhones can also be used as conventional headphones when the amplifier simulator is switched off. You can connect your guitar/bass to these headphones, or use them for listening to music. amPhones are what you need, whether you're practicing by yourself in your room, or listening to your portable audio player on the way to the studio. amPhones are a must-have item for any VOX enthusiast. Available models: AC30: Provides the AC30 top boost sound.