An amplifier increases the power of a signal, and is the last device in the signal chain before the final destination – the Speakers. There has to be an amplifier somewhere, to make the signal strong enough for the speaker to produce sound. There are 3 ways to go about this, in a PA/ Sound (…more)

 

Input devices put audio signals into the system. Signals go into the mixer input jacks and are then distributed as needed. The mixer blends all the signals together to produce one stereo audio signal that can be routed along many different paths. You can put signals to the system by either microphones or cables. Microphones (…more)