MSR100 fills many sound reinforcement and stage monitor needs in one inexpensive, lightweight package. As a mixer, power amplifier, and speaker system combined in single, compact unit, it's perfect for small events and club gigs. Mix in a CD player, rhythm machine and/or keyboard with voice all without the need of a separate mixer or power amplifier. And since it's made by Yamaha, the MSR100 provides the high-quality performance you need with exceptional ease-of-use and reliability. 100W power amplifier built into the MSR100 delivers plenty of output, ensuring that, heard with full dynamic range and clarity. This specially designed amplifier has been optimized for use with the speaker section of the MSR100 to give absolute clearest and cleanest sound possible. An 8-inch custom woofer handles the low end, while 1-inch pure titanium diaphragm compression driver delivers the high frequencies.