The Sennheiser EM 100 G4-G is a professional true diversity UHF receiver designed as a half-rack unit for permanent installation or touring use within the evolution wireless G4 series. Operating in the G-band frequency range of 566 to 608 MHz, it provides robust wireless audio reception for a single channel, utilizing two separate internal antennas and receiver circuits to constantly compare and select the strongest, clearest signal from a compatible bodypack or handheld transmitter. This true diversity operation is critical for eliminating dropouts and maintaining a stable audio link in challenging RF environments with reflections, interference, or moving performers. The receiver is engineered for simplicity and reliability, featuring an intuitive front-panel interface with a high-contrast LCD screen that displays all vital information including frequency, RF and audio levels, battery status of the paired transmitter, and selected settings.

The EM 100 G4-G incorporates Sennheiser's advanced RF technology, including a sophisticated pilot tone-based squelch system that mutes the output only in the absence of the specific signal from its matched transmitter, effectively rejecting interference from other RF sources. It offers a wide frequency spectrum with up to 2,040 tunable frequencies, allowing for easy coordination within large multi-channel systems. The unit supports both an analog and an enhanced digital audio output via an AES3 digital output, providing flexibility for integration into various sound systems. Comprehensive control is available via the front panel or remotely via Ethernet using the included Wireless Systems Manager software, which enables frequency planning, monitoring, and adjustment of multiple receivers from a central computer.

Built for the demands of professional audio, the receiver features robust metal construction, balanced XLR and unbalanced 6.3 mm audio outputs, and dual antenna inputs for connection to external antennas via BNC connectors for improved reception in large venues. Its half-rack width allows two units to be mounted side-by-side in a single 19-inch rack space using an optional adapter tray. The Sennheiser EM 100 G4-G represents a core component of a reliable wireless microphone system, offering broadcast-quality audio, exceptional RF stability, and user-friendly operation for installations in theaters, houses of worship, broadcast studios, and conference centers.