Philips soundbar hd home theater hts8161b/12 is a 2.1-channel audio system featuring ambisound technology, full hd 1080p blu-ray playback, and high-fidelity surround sound support. ambisound technology: multi-channel surround sound from fewer speakers.audio formats: dolby truehd, dts-hd, dolby digital, and dts for 7.1 support.enhancements: doublebass technology, fullsound for mp3s, and clearvoice. disc playback: blu-ray (bd-live profile 2.0), dvd, : coaxial digital input, optical digital input, ethernet, aux in, and fm antenna.