Theater Solutions TS511 5.1 Surround Sound Home Entertainment System Power Rating: 500 Watts RMS System Power Frequency Response: 40Hz - 20KHz Switchable from 5.1 to 2.1 Pro surround function for incredible Surround Sound, Stand By function, Infa-red remote sensor lamp Features high tech design to dampen distortion and deliver crisp clear response Remote Control: At your fingertips separate volume controls for Sub, Center, Rear and Front Easy set up and magnetically shielded