Sennheiser EW-DX EM 4 DANTE Four-Channel Digital Rackmount Receiver with Dante (R1-9: 520 to 607 MHz)

The Sennheiser 509370 is a four channel wireless receiver that integrates Dante networking and fits into a standard 19 inch rack. Designed for the R1-9 band between 520 and 607 MHz, it offers 87 MHz of selectable bandwidth, letting engineers find open spectrum even in crowded RF environments.

When productions call for many microphones, the unit’s Link Density mode spaces frequencies evenly, allowing as many as 293 simultaneous channels without the usual intermodulation headaches. Automatic frequency scan and Bluetooth pairing with the Smart Assist app speed up deployment, so a technician can coordinate frequencies from across the room instead of hovering over the rack.

Four network ports deliver primary and secondary Dante streams and give plenty of options for redundant or split network layouts. On the audio side, each channel provides a balanced XLR output and an unbalanced quarter inch output, making it easy to feed mixing consoles, recorders, or powered speakers.

Control remains flexible. Local adjustments are handled with dual OLED screens and a jog wheel, while larger systems can be managed from a computer through Sennheiser Control Cockpit or Wireless Systems Manager. Bluetooth control reaches up to 120 feet, handy for last-minute tweaks during rehearsals or meetings.

AES-256 encryption keeps the wireless link secure for corporate presentations or confidential events. Housed in a durable metal chassis with an internal power supply and included rack hardware, the receiver is built for venues that run long days, whether that is a touring stage, a lecture hall, or a corporate conference center.

• Four independent audio channels in one rack unit
• Integrated Dante networking for direct connection to AoIP systems
• 87 MHz switchable bandwidth with 3480 selectable frequencies in the 520 to 607 MHz range
• Link Density mode supports up to 293 simultaneous mic channels without intermodulation
• Bluetooth Low Energy control through the Smart Assist app at distances up to 120 feet
• AES-256 encryption protects wireless audio from eavesdropping
• Two OLED screens and a jog wheel offer fast on-unit navigation
• Four balanced XLR and four unbalanced quarter inch outputs provide flexible routing
• Internal power supply and included rackmount kit streamline installation
• Works with EW-DX handheld and bodypack transmitters