A home theater amplifier is an essential component of any home entertainment system. However, there are several other words and phrases that can be used to refer to this device. One of the most common synonyms is AV receiver, which stands for audio and video receiver. Other terms include a stereo amplifier, home cinema amplifier, and surround sound receiver. Additionally, some people might also refer to this device as a preamp, which is short for a preamplifier. Regardless of what you call it, the home theater amplifier is responsible for transmitting high-quality audio and video signals to your speakers and TV, making it a critical component for any home theater setup.