Output devices send audio signals out ! An audio device such as a mixer or amplifier, receives audio signals at its inputs and then, when it has done its job, it sends the signal out. The signals go through the mixer’s pre-amps, (since they aren’t very strong signals) then they are processed by the EQ (…more)


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)