The Sennheiser AC 41-EU is an active antenna combiner designed for the evolution wireless G4 series. It allows for simultaneous operation with multiple wireless stereo transmitters from the EW series (up to 4) using a shared antenna. The Sennheiser antenna combiner comes with a power supply and a set of BNC cables.
The device has a working frequency range from 470 to 870 MHz and a power consumption of 3.4 A with a resistance of 50 ohms. It is enclosed in a compact and durable housing.