Microphone

A microphone was a piece of technology meant to amplify voice. The Eleventh Doctor described them as amplifying one's natural abilities. (TV: Hide) Microphones were often used for communication purposes, most often as a component in something more elaborate, allowing those who used them to communicate across long distances. (TV: The Dalek Invasion of Earth, The Rescue etc.)

Microphones were a functionally significant component of telephones. (TV: The War Machines) In addition, microphones were also potential components of some forms of headphones (TV: The Ark in Space) and earpieces. (TV: Dalek)

Smaller microphones were worn on the clothing of television presenters and newsreaders to allow their voice to be picked up easily. (TV: Army of Ghosts etc.)

Davros had a throat microphone that enhanced his damaged voice. (TV: Genesis of the Daleks)

The Eleventh Doctor's sonic screwdriver could function as a microphone, (TV: The God Complex) as could the Twelfth Doctor's. (TV: The Doctor Falls)

The crew of the Teselecta used a microphone which when spoken into could mimic the voice of an individual the Teselecta was impersonating. (TV: Let's Kill Hitler) An individual who worked at the Dalek Dome also used a microphone that could mimic the voice of the Daleks. (COMIC: )

Microphones were used on many planets by several civilisations, such as Earth, (TV: The War Machines) Sto, (TV: Voyage of the Damned) Skaro, (TV: Genesis of the Daleks) Gallifrey, (TV: The Deadly Assassin) Mondas, (TV: The Doctor Falls) Askenflatt Minor, (PROSE: The Hero Factor) Crespallion, (TV: The End of the World) and the Vinvocci. (TV: The End of Time)

Microphones were used by singers as early as the 1940s. (TV: The Empty Child)