Adapter for Sennheiser 2000-series microphone heads (MMD935, MMD945, MMK965) to be used with Wisycom handheld transmitters MTH30x and MTH40x. The SRE302 provides a slim mechanical/electronic interface that preserves signal integrity while allowing selectable attenuation values of 0 dB, 8 dB and 18 dB. A Clear color option is available. This interface enables using legacy Sennheiser heads with modern Wisycom wireless systems in production, rehearsal, and event settings.