In-ear monitoring system Sennheiser EW IEM G4-twin-A — wireless IEM set with two bodypack receivers, 516–558 MHz

The Sennheiser EW IEM G4-twin-A is a professional wireless in-ear monitoring set designed for live performance and stage environments. The system includes a transmitter and two bodypack receivers that operate in the 516–558 MHz frequency band, delivering stable wireless audio for performers and sound engineers. This in-ear monitoring solution enables personal mixes for musicians, reduces stage noise compared with floor wedges, and supports reliable monitoring during tours, theatre productions, and live concerts.

Advantages

The EW IEM G4-twin-A offers reliable RF performance and clear audio transmission across the specified UHF band, with two independent bodypack receivers for separate personal monitoring. Its compact receiver design and robust wireless link reduce cable clutter and allow freedom of movement on stage. The system integrates into standard monitoring workflows and provides consistent sound levels and low-latency delivery appropriate for professional live situations.

Suitable for

• Live music performances and touring musicians
• Theatre and stage productions
• Broadcast and event sound reinforcement
• Backline monitoring for band members and presenters

Key specifications

• Operating frequency range: 516–558 MHz
• Configuration: transmitter plus two bodypack receivers (twin set)
• Form factor: portable rack-mountable transmitter and compact bodypack receivers
• Audio path: wireless stereo/mono monitoring support via individual mixes
• Power: battery-powered bodypack receivers (battery runtime varies with battery type and use)
• Connectivity: standard monitoring outputs for integration with mixing consoles and stage boxes
• RF performance: professional UHF wireless transmission with diversity reception

How to use

Set up the transmitter in a rack or on a stable surface and connect it to the mixing console or monitor send using the appropriate audio cables. Power on the transmitter and each bodypack receiver, select matching frequencies within the 516–558 MHz band, and confirm a solid RF link. Fit the earpieces and adjust individual monitor mixes and volume on the mixing console or personal monitor feeds. Monitor battery status and spare batteries to prevent interruption during shows.

Usage recommendations

Place the transmitter where it has clear line-of-sight to the performers when possible and avoid large metal obstructions. Scan for interference and choose the cleanest available frequencies within the 516–558 MHz range. Use fresh high-quality batteries in the bodypack receivers, and confirm gain staging on the console to prevent clipping while preserving headroom for natural-sounding monitoring.