Sennheiser EW-D SK (R4-9) – Digital Miniature UHF Transmitter

The Evolution Wireless Digital system with the EW-D SK (R4-9) bodypack transmitter is a modern solution for professional stage performers, speakers, and musicians. Thanks to digital UHF transmission, it provides unmatched sound quality, a wide frequency range, and reliable signal stability.

Product Features

• Digital UHF transmission in the 552–608 MHz range
• Compatible with Sennheiser Lavalier and Headset Microphones
• Automatic frequency optimization
• Transmission range up to 100 meters
• Smart Assist App for Bluetooth management
• Durable metal housing
• Up to 12 hours of operation with the BA 70 battery

Professional Quality and Easy Configuration

The EW-D system eliminates the need for manual sensitivity adjustments, offering an impressive audio input dynamic range of 134 dB. With Bluetooth Low Energy technology, users can manage settings wirelessly via a mobile app.

Applications

Ideal for professional stage performances, public speaking, and reporting. The ability to connect Lavalier and Headset Microphones makes it a versatile solution for artists and presenters.

Detailed Technical Specifications

• Frequency Range: 552–608 MHz
• Transmission Power: 10 mW
• Tuning Bandwidth: 56 MHz
• Number of Channels: 2240
• Power Supply: 2x AA Batteries / BA 70 Rechargeable Battery
• Battery Life: up to 12 hours
• Dimensions: 63 x 80 x 20 mm
• Weight: 120 g

Materials and Construction

The robust metal housing ensures durability under demanding stage conditions, guaranteeing resistance to mechanical damage.

Included in the Package

• EW-D SK Digital Bodypack Transmitter
• 2x AA Batteries
• User Manual

Summary

The Sennheiser EW-D SK (R4-9) is an advanced digital transmitter offering signal stability and ease of use. With its wide frequency range and high-quality construction, it is an essential component of professional audio systems.