Roland Mobile Cube Combo Amp, another model on the lately very numerous ultra-portable amps, it can be used as instrument amp or as a speaker and includes some features that are not available in bigger amps.
And the features are 5 watts stereo power output, 2 4″ speakers, mic, instrument and aux inputs, built-in effects (reverb, chorus, distortion, …), center cancel function to sing or play along with your favorite music, easy-carrying strap and 15 hours of continuous playing with battery power.

Well, this amp is perfect for those who need a small amp to practice at home, small shows at clubs, to play music with an MP3 player or anywhere you want because its size, 11.06″ x 4.25″ x 7″, makes it ultra portable. There is still no information about the price and availability.