The amp’s traditional three-band tone stack allow you to tweak your timbre in a familiar, and aurally pleasing, manner. Driving 7W through its 1x4” speaker, the Katana-Mini utilizes a multi-stage analog gain circuit, and also provides a tape-style delay with controls for time and level. Both discrete repeats and a more blurry, reverb-like ambiance is attainable in this effects section. In the rear of the amplifier, you’ll find a 3.5mm auxiliary input for jamming along to music from smartphones or other apposite devices, and you’ll also come across a 3.5mm headphone jack useful for silent practicing and recording without a mic to a mixer or recording interface. This output sports a cabinet voicing to emulate the sound of miking a speaker on stage. You’ll also find the battery panel, wherein you can power the amp with 6 AA batteries for up to nine hours at a clip. A power adapter is available separately. With a multi-stage analog gain circuit and three selectable voicings, the BOSS Katana Mini combo amplifier delivers big tone in a compact, portable package. The Brown voicing delivers iconic high-gain tone — perfect for metal leads. Crunch offers overdriven rhythm tones, while Clean provides sparkling tone with a wide dynamic range that is perfect for use with your pedals. Factor in battery power and a convenient handle, and the BOSS Katana Mini combo amp is your ideal portable practice partner.