![]() That's why most stereo speakers don't require a power cord.Īudio receivers and home theater receivers feature a built-in amplifier (and preamp), allowing them to perform the same basic function. ![]() The speaker wire that transmits the audio signal also carries enough electricity to power the speaker. Home Audio Amplifiers: Integrated and Power AmplifiersĪ home stereo amplifier collects an audio signal from your media source then boosts the signal's gain before sending it to your speakers.
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