The SK 100 G4 A1 is a professional-grade bodypack transmitter developed for dependable wireless audio in demanding live performance settings. As part of the Sennheiser evolution wireless G4 100 series, it is designed to meet the operational requirements of stage productions, corporate presentations, and broadcast applications. The SK 100 G4 A1 supports consistent transmission quality and flexible configuration, making it a practical choice for audio professionals managing multi-channel systems in dynamic environments. It offers robust build quality to withstand daily use while maintaining transmission integrity across various operating conditions. This transmitter enables infrared synchronisation with compatible receivers, streamlining system setup in time-sensitive scenarios. A key advantage is its ability to support up to twenty compatible channels, making it suitable for complex setups involving multiple users. With a transmission range of up to 100 metres and up to 30 milliwatts of RF output power, the SK 100 G4 A1 ensures reliable coverage across larger venues. Its 42 MHz bandwidth and access to 1680 tunable UHF frequencies provide ample flexibility in frequency planning, minimising interference in crowded RF environments. The SK 100 G4 A1 plays a vital role in delivering stable and high-quality wireless audio transmission for professional users who require precision, durability, and efficiency in their audio systems.