Roland’s famous CUBE amp lineup expands with three hot new models: the Cube 15X, 20X, and 30X. With great new features such as Power Squeezer® for maximum sustain without maximum volume, a fully equipped guitar tuner in the 20X and 30X, a mini-jack aux in for playing along to MP3 and CD players, and of course that incredible CUBE sound, these amps are built to rock!