In a nutshell

The Beachteck MCC-2 is an audio adapter for camera or DSLR having only a mini jack audio input. It allows the connection of two unbalanced mini jack microphones (or RF receivers) or the connection of a single mini jack unbalanced stereo microphone into the camera unbalanced 3.5 mm mini jack input. A switch allows to mix both signals and to record their sum on both camera tracks.
Several slots allows the adapter to take place on a DSLR flashgrip and to support a microphone or a radio receiver.

Our recommendations

The MCC-2 is truly passive and doesn't requier any power supply.