The Roland CUBE Street EX Battery Powered Stereo Amplifier is an all purpose on-the-go amp and/or PA system. Perfect for street performers & travelling musicians the CUBE Street EX is compact in size & bettery-powered for easy operation & transportation. Enjoy clean punchy sound for larger crowds with 50 watts of power & a stereo speaker system with dual woofers & tweeters while four independant channels offer abundant connections for a variety of mics & instruments giving you incredible versatility. Selectable power modes provide up to 20 hours of operation with eight AA batteries & two CUBE Street EX units can be linked together for more sound coverage if needed. & with i-CUBE LINK you can even plug in your iPhone or iPad to play backing music & record your performances!