Phonic's durable, molded full-range speakers are designed to accommodate professional applications requiring both portability and impeccable sound quality. Whether used indoors or outdoors, the PA550 successfully fills the environment with superb sound quality. The biamp-powered PA550 provides 210 watts (415 program) to its 15 in. woofer, and a separate 70-watt (135 program) amp drives the 1 in. titanium compression driver.