DESC: Ribbon driver technology delivers accurate and pure sound with reduced distortion and drop-out Built-in surround sound decoders include Dolby Digital EX, DTS-ES, DTS NEO:6, DTS 96/24, Dolby Headphone, Dolby Virtual Speaker, Dolby ProLogic 2 Total output: 1300 watts (satellite speakers: 220W x 4; center-channel: 220W; subwoofer: 200W; RMS power 650W (satellite speakers: 110W x 4; center-channel: 110W; subwoofer: 100W) Satellite and Center channel speakers feature a 4 inch KEVLAR® cone woofer and 1-1/4 inch ribbon tweeter All speakers magnetically shielded for use near a TV or monitor to avoid picture distortion