Roland Guitar Amplifier MICRO CUBE GX Guitar Amplifier Ultra-compact guitar amp with custom-designed speaker Eight COSM amp tones, including the ultra-heavy EXTREME amp Eight DSP effects, including HEAVY OCTAVE and dedicated DELAY/REVERB with spring emulation MEMORY function for saving favorite amp and effects settings i-CUBE LINK jack provides simple audio interfacing with Apple’s iPhone, iPad, and iPod touch (interface cable included) Free CUBE JAM app for iOS plays songs and minus-one jam tracks, and lets you record the MICRO CUBE GX’s COSM amp tones along with music playback Chromatic tuner built in Runs on battery power or supplied AC adapter; carrying strap included