The Shure QLXD14E/SM35 harnesses technology from Shures most advanced systems for unparalleled signal stability. This is elevated wireless. Built to perform in the most challenging environments. Thanks to an ensemble of powerful features QLX-D does the hard work for you. Automatic Channel Scan quickly locates clear frequencies for your system at the press of a button. And dropouts are eradicated thanks to intelligent Predictive Switching. Even running multiple systems is effortless. Combined with exceptionally detailed 24-Bit digital audio quality the QLXD14E/SM35 delivers incredible sound in a sophisticated wireless system. And with the SM35 headset youll get clear high quality vocals for any situation.