VOX MINI3 G2 Battery Powered Modeling Amp, 3W, Black (MINI3G2BK) Eleven amp models range from high-gain to pristine clean types, supporting a variety of instruments The proprietary VOX "Bassilator" circuit delivers a heavy sound with ultra-low frequencies Enhanced quality effects such as: compressor, chorus, flanger, tremolo, delay and reverb Dual power options; use the included AC adaptor, or six AA batteries for up to 10 hours enjoyment AUX input jack - connect your MP3 player or other audio source and jam along