EW-DEM (R4-9) Wireless Receiver

The Sennheiser EW-D EM (R4-9) is a professional digital wireless receiver from the Evolution Wireless Digital series. It is designed to work with:

• EW-D SK bodypack transmitters
• EW-D SKM handheld transmitters
• Lavalier and headset systems
• Wireless instrument systems for accordion, guitar, bajo quinto, bass, and more.

This model operates in the R4-9 frequency range (552–607.8 MHz) and is commonly used in:

• Touring rigs
• Live bands
• Churches
• Corporate AV
• Professional stage productions

Main Features

• Digital UHF wireless receiver
• Frequency range: 552–607.8 MHz
• Intelligent diversity reception for stable RF performance
• Ultra-low latency: 1.9 ms
• Huge dynamic range: 134 dB
• Bluetooth control with EW-D Smart Assist App
• Rackmount-compatible half-rack design
• Up to 90 simultaneous channels
• Auto frequency scan and synchronization