The Thump Connect 2™ app for the Mackie Thump GO™ and ThumpXT loudspeakers allows wireless control over everything from channel levels, speaker modes, music ducking, speaker linking, and more. Haven't purchased a Thump loudspeaker but want to try the app? The Thump Connect 2 app allows you to explore every feature and even emulate a connected Thump GO or ThumpXT in Demo Mode. CONTROL EVERYTHING • All input and master output levels • Application-specific speaker modes • Music Ducking mode • Fee