Sennheiser EK IEM G4 Stereo Bodypack Receiver with IE 4 Earphones (G: 558 to 608 MHz)

The Sennheiser 509623 is a stereo bodypack receiver designed for in-ear monitoring during live performances and rehearsals. It delivers clear, reliable audio across a frequency range from 558 to 608 MHz, making it suitable for musicians, sound engineers, and performers who need consistent sound quality on stage. The receiver supports up to 1680 selectable frequencies within a 42 MHz bandwidth, allowing you to find a clear channel even in crowded wireless environments.

With a transmission range of up to 100 meters, this bodypack receiver offers freedom of movement without losing signal. Its adaptive diversity system ensures stable reception by automatically selecting the best antenna signal, reducing dropouts and interference. The rugged metal housing protects the unit from the rigors of touring and live use, while the backlit, menu-driven display makes it easy to navigate settings quickly, even in low-light conditions.

Included with the receiver are Sennheiser’s IE 4 earphones, which provide detailed in-ear monitoring through a standard 3.5mm output. These earphones help you stay focused on your performance by delivering clear sound and isolating external noise. The receiver runs on two AA batteries or a rechargeable pack, offering up to six hours of continuous operation—enough to cover most gigs and practice sessions without interruption.

This system is ideal for anyone who needs dependable wireless monitoring, whether you’re a solo artist, part of a band, or working in a professional audio setup. Its combination of robust build quality, flexible frequency options, and user-friendly controls makes it a practical choice for live sound environments.

• Frequency range from 558 to 608 MHz
• Up to 1680 selectable frequencies with 42 MHz bandwidth
• 16 compatible channels for flexible setups
• Transmission range up to 100 meters
• Adaptive diversity for stable signal reception
• Menu-driven backlit display for easy operation
• Rugged metal housing for durability
• Includes IE 4 earphones with 3.5mm output
• Powered by two AA batteries or rechargeable pack
• Operating time of up to 6 hours