JOYO JA-02 3W Mini Electric Guitar Amp Amplifier Speaker with Volume Tone Distortion Control 3W Speaker Output  this thing gets loud! Gold plated input jack, sturdy construction Features both an output (3.5 mm stereo phones) and input jack (aux in) Clean and Overdrive Channels: convenient OD switch enable Distortion Treble can be adjusted to control high-end, smooth tone adjust knob