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Vincent Zhang | Jan 19, 2026
My LS3/5A Journey
Vincent Zhang | Feb 26, 2026
OPT vs. OTL: The Two Defining Philosophies in Hi-Fi Tube Amplifiers
Vincent Zhang | Jan 07, 2026
DIY Tube Amplifier Testing and Adjustment --A Practical Engineering Guide
Vincent Zhang | Sep 22, 2025
The 6P1 Vacuum Tube: A Vintage Gem for Small Power Amplifiers
Vincent Zhang | Mar 28, 2026
Soft Start and Delayed B+ Power-Up Circuits for Vacuum Tube Amplifiers — Professional Revised Edition
Vincent Zhang | Mar 18, 2026
Output Transformers in Vacuum Tube Push-Pull Amplifiers--Core Size, Power, and the Science Behind the Iron
Vincent Zhang | Jul 29, 2026
How to Choose the Right Vacuum Tube Amplifier Output Transformer (OPT)
Vincent Zhang | Jun 26, 2026
The Complete Guide to Vacuum Tube Replacement: Types, Substitutes, and When to Replace
Vincent Zhang | May 21, 2026
Fostex FE108-Sol vs FE126En: A Detailed Full-Range Driver Comparison
Vincent Zhang | Feb 25, 2026
12AX7 vs 12AX7B: What’s the Difference—and Which One Is Better for Hi-Fi Audio?
Vincent Zhang | Mar 19, 2026
How to Choose the Right Output Transformer Impedance
Vincent Zhang | Mar 08, 2025
Rediscovering Golden Age Sound: IWISTAO FU29 Tube Amplifier
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