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Vincent Zhang | Jul 12, 2026
Cathode Resistance in Tube Amplifiers: Bias, Gain, Heat, and Practical Selection
Vincent Zhang | Mar 19, 2026
How to Choose the Right Output Transformer Impedance
Vincent Zhang | Sep 21, 2025
The Titans of Tone: A Comparative Guide to 211, 845, 813, and 811 Vacuum Tubes
Vincent Zhang | Mar 16, 2026
Single-Ended Output Transformers Core Size, DC Bias, and the Art of the Air Gap
Vincent Zhang | Mar 18, 2026
Winding Your Own Filter Choke for Tube Amplifiers-A More Rigorous Engineering Guide
Vincent Zhang | Nov 21, 2022
Brief of Vacuum Tube Models and Replacement
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