Boss Katana 100/212 Gen 3 100W guitar combo amplifierIntroducing the Boss Katana 100 212 Gen 3 100W guitar combo amplifier The tube logic enhancements enrich the core platform with even greater sound, feel and response, including an expressive pushed amp character. You can also the 'sweet spot' sound at any volume with the integrated power control which lets you dial in cranked amp inspiration with no adverse effect on the sound. The tube logic recreates tube circuitry and all its complex interactions