An A/V receiver has a built-in amplifier. An A/V receiver is able to receive an audio signal, process it, amplify the signal to the speakers, and allow video to pass-through to a TV or projector. While an amplifier is only able to receive and audio signal, process it, and amplify the signal to different speakers.

Why do you need an amplifier?

An amplifier boosts the low-level audio signal generated by the head unit so that its powerful enough to move the cones of the speakers in the system and create sound. But before the signal can be amplified, it has to be processed by a preamplifier or preamp.

What does an amplifier do in home theater?

A home theater amplifier (also known as an audio-visual receiver or simply an AVR) is a powerful piece of kit that combines amplifiers and digital signal processors to convert output from a range of source devices into high quality sound and video. In short, it is the hub of a home theater set up.

How do you hook up an amplifier to a receiver?

How to Connect a Power Amp to an AV ReceiverFind the power source for all pieces of equipment. Purchase all the necessary equipment (trigger wire, RCA cable, speaker wire) Run a trigger wire from the Power Amp to the AV Receiver. Use an RCA cable to connect the AV receivers pre-out to the power amplifiers jack.More items

Do I need an amplifier with my receiver?

Do you need a receiver and amplifier? Typically, no. An A/V receiver has a built-in amplifier. An A/V receiver is able to receive an audio signal, process it, amplify the signal to the speakers, and allow video to pass-through to a TV or projector.