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In home entertainment there’s no item as potentially confusing as its centrepiece – the AV receiver. Here’s a quick guide that will answer your questions. What’s an AV receiver? It’s an amalgam of several parts in one box. In an AV receiver you’ll find a controller, which selects among the various source components (CD, DVD etc) and controls the volume; digital processing for decoding the sound to be sent to the various speakers, and amplifiers for powering five or seven speakers. Do I need an AV receiver?