Sennheiser EW-DX EM 2 Dante Wireless Receiver - R1-9 Band

The Sennheiser 509357 is a receiver that operates digitally and manages two wireless channels while fitting neatly into half a rack. It pairs with EW-DX transmitters and brings network audio right to your rack through built-in Dante, so you can route signals over standard Ethernet without extra converters.

Because the unit accepts Power over Ethernet, a single network cable can handle both power and audio. An additional DC input is on hand for redundancy, giving installers peace of mind in critical rooms and live rigs.

Busy frequency environments are handled automatically. The receiver scans the spectrum, chooses clear frequencies, and applies equidistant spacing that unlocks up to 293 compatible channels across an 88 MHz window. Engineers can step away from the RF math and still enjoy rock-solid performance.

Sound quality stays intact thanks to 134 dB of input dynamic range. No manual gain staging is required, so presenters and performers can swap microphones without touching a knob. Latency remains a low 1.9 ms from capsule to output, keeping speech and music locked to on-stage action and screen content.

Day-to-day control is straightforward. The front panel offers an OLED screen, a jog wheel, and a headphone jack for quick checks, while Sennheiser Control Cockpit and the Smart Assist app extend monitoring and remote adjustments to laptops, tablets, and phones. AES 256 encryption secures every transmission, making the system a solid choice for corporate boardrooms, classrooms, worship spaces, and live productions where confidentiality and reliability matter.

• Receiver with two channels that occupies half a rack and offers Dante connectivity
• 88 MHz of switching bandwidth enables flexible frequency planning
• Handles up to 293 channels when used with EW-DX systems
• Delivers 1.9 ms latency for real-time audio
• Provides 134 dB input dynamic range with no manual gain adjustment
• Runs automatic frequency scan and setup at power up
• Works with Sennheiser Control Cockpit and Smart Assist for remote control
• Supports Power over Ethernet and includes an additional DC input for redundancy
• Employs AES 256 encryption for secure transmission
• Features an OLED display, a jog wheel, and a headphone output for quick monitoring