The boss katana air ex wireless guitar amp is a cutting edge musical companion perfectly blending advanced boss wireless technology with the splendid tones of a premium katana amplifier. The air ex packs a whopping 35 watts of power into a twin 5 speaker wood cabinet perfect for any player that needs a massive yet portable sound. Like the standard katana air it makes practice and jamming a breeze simply pick up your guitar and the amp will automatically switch on and be ready to rock. And with the inclusion of over 60 world class boss effects and the boss tone exchange for easy preset loading its perfect for jamming and rehearsals. The boss tone studio app boasts powerful sound editing and practice features to get you rocking. Whats more you can rock out wherever you like thanks to the support for mains power aa batteries or a separate roland rechargeable battery pack.