This microphone has a unique circuitry which allows the alteration of your voice ! The six way switch on the front allows you to change your voice into that of the opposite sex making you unrecognizable to the listener. It can also be adjusted to produce funny sounds like Donald Duck whilst remaining very clear and sharp. A switch also allows the switching off of the voice changer turning the M101 into an excellent pre-amplified microphone. It is also fitted with an earphone jack so that the output of the microphone is monitored.