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That's a lot for a single device to handle.
Although home theater receivers have built-in amplifiers to power speakers, some receivers provide preamp outputs that can be connected to one, or more power amps to provide greater power output than its own built-in amplifiers may have.
What a Power Amplifier Is and How to Use It
If the subwoofer is a passive type, a subwoofer preamp output needs to be connected to an external power amplifier aka subwoofer amplifier.
Amplifiers generate a lot of heat.
Description: If the receiver provides 7.