AV RECEIVER TECH

A/V What?
An A/V receiver combines three audio components in one box. Primarily, it performs the traditional roles of a preamplifier and power amplifier. The sound for any home theater begins as a relatively low-level audio signal coming off a source component such as a cable box or disc player. These days, it’s more likely to be a digital audio signal than an analog signal. That signal gets converted between digital and analog as needed, manipulated to affect your volume adjustment, and might perhaps have some bass and treble contouring (or more sophisticated equalization) applied before it’s sent to the power amplifier, whose only job is to pump it up to the power level necessary to drive your speakers to sufficient volume.

A friend who went to college in the late 1960s told me that everyone in his dorm fell into one of two absolutely opposing groups: those who blasted the Who’s Tommy and those who were mesmerized by the Beatles’ White Album. Or for the sticklers among you, the album nicknamed the White Album but officially known as The Beatles. I could entertain you with a few more sentences’ worth of metaphor, but you get the idea. You say tomato, I say tomahto.

In the last few years, video has been grabbing most of the headlines. Maybe you're not familiar with Audyssey, but this breakthrough acoustical-correction technology is showing up in the latest-generation A/V receivers to infuse new life into home theaters everywhere.