An amplifier that's used to split a sigle audio signal into multiple signals which are all equal to the original. This allows a single signal to be split so it can drive many pieces of equipment with the same signal. The most common use is so that many power amplifiers can be fed with the same input signal.
Electronic device used to connect an input to and switch between multiple outputs while also amplifying the signal for longer transmission.
This device amplifies and distributes an audio or video signal to multiple outputs, such as several video monitors or recording devices. This device allows the maintenance of the original signal's output impedance to avoid mismatches which could reduce the power required to properly drive the signal's end point.