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amplifier - How does the feedback in this tube amp output driver work? - Electrical Engineering Stack Exchange
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Welcome to the most complete do it yourself guide on the D. T. N. Williamson tube amplifier.Chapter 11, adjusting C10 and R26 and applying Negative Feedback
4.4 Global Negative Feedback in a vacuum tube amplifier - Vacuum Tube Amplifiers - DIY
Feedback and Fidelity – Norman Koren – Interface Technologies
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Smart negative feedback - Valve Radio
Understanding Audio
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Smart negative feedback - Valve Radio
