Church Pa Systems 

The latest technology in sound systems where all your sound is automatically controlled 
Only the one mic is switched on step away and it is off automatically 
Soft spoken people can now be heard, the volume is turned automatically
loud people are turned down automatically 
Howling feedback can be controlled automatically.
Echo can be cancelled out 
New microphone design means Preachers can move around the pulpit with no changes to the level or quality of the sound.
Most important , there are no controls for anyone to misadjust