Money from the grant was used to purchase wireless microphone systems and other audio equipment.

Usually this special microphone system must be built up from two single small diaphragm microphones.

I'd already had in a special stage crew to set up the lights and microphone system.

Early experiments with neon lights created a buzzing sound through the microphone system which was severe enough it could not be used.

These used a throat-activated microphone system and were far superior to the Soviet models.

It is also with a unique microphone system allowing for detailed control of the amplified sound.

As of April 2011, four people have undergone a trial of an internal microphone system, with two more yet to come.

Further developing this technology, Line 6 developed and introduced a family of digital wireless microphone systems in 2010.

Surely we should check the microphone system in the House.

One person from one club will host the game, talking to all other clubs simultaneously over their microphone system.