Great-sounding, Reliable Wireless The Sennheiser EM 100 G4 offers 1,680 tunable UHF frequencies across a 42MHz bandwidth for interference-free reception. And its a breeze to use. Synchronize it to a transmitter with a quick push of a button. Link up to 12 receivers for simultaneous setup, and benefit from a 330-foot transmission range and up to 8 hours of operation. You also get a high-contrast LCD display with a blue sync LED and dedicated Escape button. Beyond that, the EM 100 G4 is backwards compatible with previous evolution systems, ensuring that your past investment continues to pay off into the future. No matter the stage or environment, you can trust Sennheiser's EM 100 G4.You can rely on this receiver The rugged EM 100 G4 rack receiver is ready for the road with its proven transmission reliability and inspiring flexibility. A sound check mode allows you to check the audio and