Yes and no. Yes, because it does perform an amplifier’s functions. And no, because it is not just an amplifier but inclusive of other features too. An AV receiver includes a tuner, preamplifier, and an amplifier with lots of other built-in functionalities by default. Stereo receivers are sometimes referred to as amplifiers because they only consist of two-channel speaker configurations other than the amplifier. However, the audio-video receiver is one unit in which amplifying is just one of the small features.