As the set uses the Ambisound technology to output sound, the total output power will vary and therefore no exact figure can be specified. What is Ambisound? Philips' proprietary Ambisound technology delivers full 5.1 surround sound, creating an immersive entertainment experience without the hassle of multiple speakers or wires. Ambisound realizes a full multi-channel surround sound experience with just front-facing speakers. Unique and tried and tested techniques enable you to hear sounds as if they originate from all corners of the room If you would like to know more about Ambisound, click here.