This little Johnson amp is the perfect solution to playing in any situation where portability is a necessity. It runs on either an 9 volt battery (included) or an AC adapter (not included). While extremely portable the amp still sounds great! The 4 watts of output are louder than one might think and the range of tones are superb. You can easily dial in a smooth clean sound or a crunchy distorted sound by using the controls located on the amp which include: volume, overdrive, and to (more…)