The EM 100 G4-B is a professional-grade true diversity half-rack receiver engineered for dependable performance within the Sennheiser evolution wireless G4 100 Series. Designed to meet the requirements of corporate AV environments, broadcast applications, and live production settings, the EM 100 G4-B ensures stable UHF transmission and efficient signal management. Encased in a robust full-metal housing, the unit delivers long-term durability, making it suitable for fixed installations and mobile setups alike. The intuitive LCD interface offers precise control over settings and operational status, supporting both on-site and remote configuration. With advanced linking capabilities, the EM 100 G4-B allows for fast and coordinated frequency allocation across multiple receivers, streamlining deployment in multi-channel systems. Infrared synchronisation between transmitter and receiver ensures consistent and accurate pairing. Operating within a 42 MHz bandwidth and offering up to 1680 selectable frequencies, it provides flexibility to adapt to varied spectrum conditions. The transmission range of up to 100 metres enables reliable signal coverage in medium to large venues. As part of the Sennheiser evolution wireless G4 ecosystem, the EM 100 G4-B plays a critical role in delivering high-quality, interference-resistant audio for professional users seeking scalable wireless solutions.