Sennheiser EM 100 G4 True Diversity Wireless Receiver

The Sennheiser 509654 is the EM 100 G4 True Diversity Wireless Receiver, designed for performers, presenters, and audio engineers who depend on rock-solid wireless sound every time the mic goes live.

Thanks to true diversity reception, two independent receiver sections constantly compare signals and switch to the stronger one in real time. This design cuts dropouts and keeps the signal clear even in busy RF environments. A 42 MHz tuning range gives access to 1 680 selectable UHF frequencies, so you can find an open channel almost anywhere and run up to 20 compatible systems side by side.

Setup moves quickly. Hold the transmitter in front of the receiver, tap the infrared sync button, and the pair lock to the same frequency in seconds. An easy-to-read LCD guides you through every menu, from scanning for available channels to adjusting output levels.

The unit works at distances up to 300 feet, so performers can roam a large stage or production set without losing the signal. With a signal-to-noise ratio of 110 dBA, the audio remains clean and quiet, making spoken word and music alike sound polished through the house system or broadcast feed.

The metal housing slides into a half-rack space or sits confidently on a desktop. Balanced XLR and unbalanced 6.3 mm outputs connect to mixers, interfaces, or powered speakers, while BNC antenna ports allow remote or cascaded antenna setups when the rig grows.

Whether you manage a touring band, a church sound booth, a corporate events team, or a small broadcast studio, the EM 100 G4 offers a familiar workflow and the reliability Sennheiser engineers into every piece of its Evolution series.

• True diversity receiver in a half-rack frame
• Operates up to 20 compatible channels simultaneously
• 42 MHz bandwidth with 1 680 selectable UHF frequencies
• Reliable range up to 100 meters (approximately 300 feet)
• Signal-to-noise ratio of 110 dBA for clear, low-noise audio
• Infrared synchronization pairs transmitters quickly
• Backlit LCD streamlines channel selection and system monitoring
• All-metal chassis built for touring and daily installation work
• Balanced XLR, unbalanced 6.3 mm, and BNC antenna connectors