The TSB3.0 2-Way Ultra-Thin Soundbar with EVT™ Intelligibility Control. The TSB3.0 is a truly ultra-thin, three-channel soundbar measuring only one and one half inches thick where the bar meets the TV. The TSB features Phase Tech'sEVT"- enhanced voice technology circuitry. So next time you're watching a film and can't make out the dialog, simply flip the EVT switch and the frequencies associated with human speech intelligibility will be bumped up bringing that buried dialog into the foreground. The TSB also features Phase Tech'sSFE"-spatial field expander, side drivers that create a wide, enveloping soundstage that extends far beyond the confines of the speaker cabinet. The TSB comes with a wall-mount and tabletop stand. For optimal sound, pair the TSB with the P3-35 3-Channel amplifier.