The Boss Katana Mini is a 7W guitar amplifier combo featuring a 4" speaker, a 3-band EQ section, a delay effect, and a multi-stage analogue gain circuit. The Katana Mini is a small, go-anywhere amplifier that runs on six AA batteries. Offering a superior sound quality, this miniature amp features an authentic multi-stage analogue gain circuit for a huge, expressive sound, as well as a traditional analogue EQ and onboard tape-style delay. With three versatile amp types including Brown, Crunch, and Clean, this mini-amp contains an aux input for jamming with music from a smartphone.