Sennheiser EM 100 G4 – Wireless Rack Receiver The Sennheiser EM 100 G4 is a professional true diversity UHF wireless rack receiver from the evolution wireless G4 100 series. It is designed for high-quality, reliable audio transmission in live sound, broadcast, corporate AV, houses of worship, and stage applications. It is commonly paired with Sennheiser SK 100 G4 bodypack transmitters or SKM 100 G4 handheld microphones, forming a flexible wireless microphone system. Key Features True diversity half-rack receiver (high RF stability) Full metal rugged housing for professional use Wide UHF tuning bandwidth up to 42 MHz Up to 1680 selectable frequencies (25 kHz steps) Auto frequency scan for interference-free setup Up to 20 compatible channels per frequency bank Infrared sync for fast transmitter pairing High-quality audio transmission with low latency Backward compatibility with G1/G2/G3/G4 systems LCD display with intuitive menu navigation Technical Specifications Model: EM 100 G4 System Type: Wireless rack receiver (true diversity) Frequency Range: Multiple variants (A, G, B, C, etc.) Switching Bandwidth: up to 42 MHz Audio Performance: Signal-to-noise ratio: ? 110 dB(A) Total harmonic distortion: ? 0.9% Audio output: 6.3 mm jack (unbalanced) +12 dBu RF Reception: True diversity reception system Sensitivity: 2.5 µV (typical) Up to ~100 m operating range (environment dependent) 1680 frequencies, fully tunable UHF system Build Design 1/2 rack metal chassis (rack-mount kit included in many versions) High-contrast LCD display BNC antenna inputs (dual diversity) Designed for continuous professional use Applications Live concerts and stage performances Corporate presentations and conferences Theaters and houses of worship Broadcast and production environments Educational facilities and event venues Advantages for Buyers Very stable professional UHF wireless system High resistance to interference (true diversity design) Fast setup with auto-scan and IR sync Compatible across multiple Sennheiser G-series generations Proven reliability in live and installed AV systems Short Sales Summary (for listings) Sennheiser EM 100 G4 Receiver – professional true diversity UHF wireless rack receiver with 1680 frequencies, auto-scan, IR sync, and up to 42 MHz bandwidth. Ideal for live sound, conferences, theaters, and professional wireless microphone systems.