Term: Surround Receiver:

An audio/video component with a built-in radio tuner that will receive radio broadcasts on FM or AM, switch different audio and video input sources, and decode Dolby Digital or dts 5.1-channel soundtracks. A/V receivers also contain from five to seven internal amplifiers to amplify the audio signals for delivery to up to seven loudspeakers in a 7.1-channel home theater surround system. All A/V receivers also contain a separate Subwoofer output (the “.1” channel of 5.1 surround) to feed a powered subwoofer for deep bass effects.

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