Booster

An electronic device used to increase the power of a signal. The booster has one or more inputs, and one or more outputs. The signals coming in are gathered, given a power boost, and sent to the output. Boosters are used to send signals a greater distance than they could reasonably travel on their own. Booster also refers to a component of an audio/video system that collects line-level signals, processes them, boosts them, and sends the high-level signal to the target destination.