A street buskers ideal amp. The Roland CUBE Street EX Battery Powered Stereo Amplifier w/ Case is a live performers favourite thanks to its 20 hour battery life and lightweight design. Performing as a band? Youll find four channels for connecting mics and instruments directly and be able to mix them and add effects. You can also plug in your smartphone and play backing music or record your performances. Experience great sound with portable convenience. Its lightweight easy to carry and durable. Keep it protected on the move with the included case and carry it easily over your shoulder.