Roland’s famous CUBE amp lineup expands with the hot new CUBE 30X. With great new features such as Power Squeezer® for maximum sustain without maximum volume, a fully equipped guitar tuner, a mini-jack aux in for playing along to MP3 and CD players, and of course that incredible CUBE sound, this amp is built to rock! -Powerful COSM® onboard -Unique Dyna Amp feature -New acoustic simulation inherited from BOSS AC-3 -Power Squeezer for maximum gain and sustain - even at low volumes -Convenient onboard tuner *New in box, comes with factory warranty