Quote Originally Posted by 02audionoob
By extending the negative feedback loop to the speaker inputs, it creates a high damping factor and reduces distortion...Of course, if it was of unquestioned benefit, you'd probably see it done on other amps.
You are most certainly correct as to your latter point since extending the NFB loop to the speakers would be a timing disaster. The fundamental concept behind negative feedback is that you are trying to correct something that has already happened. Extremely high speed operation is a necessity and extending that loop to low impedance wires out to the speaker and back would drastically increase the response time. Imagine a luge or skeleton runner who was constantly banging against one wall or another trying to find the center course.

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