Sennheiser ew IEM G4-TWIN-A Wireless In-Ear Monitor System

The Sennheiser ew IEM G4-TWIN-A is a professional-grade wireless in-ear monitoring system designed for live performance, broadcast, and theater applications. The system centers on the SR IEM G4 stereo transmitter, a half-rack unit housed in a full-metal enclosure with an OLED display that provides clear visibility of frequency, RF level, and audio settings. With up to 42 MHz of bandwidth and 1,680 selectable frequencies within the 516–558 MHz range, the system offers extensive flexibility for finding clean channels in crowded RF environments. Up to 16 systems can operate simultaneously in a single frequency range, making it suitable for full-band or ensemble monitoring setups.

The TWIN package distinguishes itself by including two EK IEM G4 stereo bodypack receivers, each paired with IE 4 earphones. This makes it a cost-effective solution for outfitting two performers from a single transmitter. Each bodypack runs on two AA batteries and features a compact, belt-clip design with intuitive controls for volume and EQ adjustment. The included GA 3 rackmount kit allows clean integration into standard 19-inch equipment racks, and the rod antenna provides reliable transmission up to 100 meters. Whether you are setting up a small stage or integrating into a larger wireless infrastructure, the ew IEM G4-TWIN-A delivers the sound quality and RF reliability that Sennheiser's evolution series is known for.