The Vox amPlug is a headphone guitar amplifier that mimics the sound of popular tube guitar amplifiers. By plugging in the amPlug directly to a guitar, you can continue to play without annoying your surround neighbors, roommates, or family members. The amPlug comes in five styles, each emulating a different guitar sound: 1) the Vox amPlug AC30 that emulates the popular Vox AC30 amp, 2) the Vox amPlug Classic Rock which is modeled to sound like a high-gain 100W Marshall amp, and 3) the Vox Metal that emulates the American made heavy metal amps. Two new models: 4) the Vox amPlug Lead and 5) Vox amPlug Bass were released in 2008.