The Audio-Technica ATW-2120b handheld wireless system delivers rock-solid performance, by virtue of true diversity operation. Enjoy interference-free use, thanks to Audio-Technica's Tone Lock squelch system. Balanced XLR and unbalanced 1/4" outputs ensure compatibility with a wide variety of audio gear. The ATW-R2100b receiver is packed into a rugged metal enclosure with convenient soft-touch controls and an easy-to-read LCD. Achieve maximum feedback rejection and consistent sound, courtesy of the ATW-T220a transmitter's cardioid capsule. Dial in your operating range with switchable power output. Eliminate hum with the built-in ground-lift switch. For such a reasonably priced system, the ATW-2120b is packed with features.