Preamp Gain Stages - The Plate Resistor: Values, gain, tones and theory incl load lines!
A deep dive into the humble plate resistor in a 12AX7 gain stage. What is it's purpose and what impact is there on gain and tone with different values. This video examines a stock Marshall 100k value against a 330k in 3 ways, measurements, tone and theory. https://headfirstamplification.com 0:00 Intro 1:16 DMM & Scope measurements 6:20 Tone test 7:54 Theory 22:22 Conclusion
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Preamp Gain Stages: the Cathode Resistor. GAIN, TONES & THEORY!!!
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3 Gain Stages Good, 4 Gain Stages Better!!
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Tube Amplifier Tone Stacks: Part 1
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The Friedman SAT Switch
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A Better Grounding Scheme For Your Marshall
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Resistors, Part 1: Their Circuit Function & Practical Applications of Ohm's Law
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Fender Commits Brand SUICIDE
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Biasing Single-Ended Amplifier Output Tubes: A Basic Explanation and Demonstration
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How to use a Digital Oscilloscope...to test your tube amp! AT THE BENCH!
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Resistors, Part 5: Plate Resistors
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Resistors, Part 4: The Cathode Bias Resistor
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How To Build Low Noise Tube Amp Turret Boards - W.I.S.C - GT5 'Halcyon' Build 2
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What are Valve Rectifiers? | Too Afraid To Ask
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The Tiny Donut That Proved We Still Don't Understand Magnetism
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Ground Schemes | Part 1 : The Ideal vs Good Enough vs Vintage Marshalls
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Cathode Bypass Capacitors: How they Affect Gain and Tone
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High Gain Amp Circuits Explained
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Fixed vs. Cathode Bias Tube Guitar Amps - what's the difference??
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Biasing Double-Ended Amplifier Output Tubes, Part 1: Basic Explanation & Methods
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