Sennheiser EK IEM G4 Stereo Bodypack Receiver with IE 4 Earphones

The Sennheiser 509621 is a stereo bodypack receiver designed for professional in-ear monitoring, paired with IE 4 earphones to deliver clear and reliable sound on stage. It operates within a frequency range of 470 to 516 MHz and offers up to 1680 tunable frequencies across 16 channels, giving you plenty of options to find a clean signal in busy wireless environments. This makes it a solid choice for musicians, sound engineers, and performers who need consistent audio quality during live shows or rehearsals.

The receiver uses adaptive diversity technology to maintain a stable connection, reducing dropouts and interference. Setting it up is straightforward thanks to infrared wireless synchronization with compatible transmitters, and the backlit display provides easy access to important information like RF levels and battery life. Its compact metal housing is built to withstand the rigors of touring and daily use, while weighing just 125 grams with batteries installed.

Power options include two AA batteries or a rechargeable accupack, giving you flexibility depending on your setup. The audio output features a 3.5mm stereo jack, compatible with the included IE 4 earphones, which are designed to deliver detailed sound and good isolation. Additional features like a switchable high-boost and an adjustable limiter allow you to fine-tune your audio for the best listening experience. Integration with Sennheiser’s WSM software makes frequency management easier, especially in complex environments like concerts or theater productions. With a transmission range of up to 100 meters, this receiver lets you move freely on stage without worrying about losing signal.

This receiver and earphone combination is ideal for anyone who needs dependable, high-quality in-ear monitoring in professional settings, whether you’re performing live, mixing sound, or rehearsing.

Highlights:

• Frequency range from 470 to 516 MHz for flexible channel selection
• Up to 1680 tunable frequencies and 16 compatible channels
• Transmission range of 100 meters for unrestricted movement
• Adjustable audio limiter and switchable high-boost for precise sound control
• Powered by two AA batteries or a rechargeable accupack
• Durable metal housing designed for professional use
• Lightweight at 125 grams including batteries
• Includes IE 4 earphones with 3.5mm stereo output