The SRE301 is a slim mechanical/electronic adapter that enables Sennheiser microphone heads of types KK, ME and MD to be used with Wisycom handheld transmitters MTH30x and MTH40x. It provides selectable attenuation of 0 dB, 8 dB and 18 dB, and is offered in a Clear finish. The adapter is designed for compact, reliable integration in professional broadcast, stage, and studio environments where Sennheiser capsules must interface with Wisycom systems.