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Vincent Zhang | Feb 25, 2026
12AX7 vs 12AX7B: What’s the Difference—and Which One Is Better for Hi-Fi Audio?
Vincent Zhang | May 12, 2026
Fender Tube Guitar Amplifiers: The Complete Guide to Circuit, and Key Parts Replacement
Vincent Zhang | Jun 26, 2026
The Complete Guide to Vacuum Tube Replacement: Types, Substitutes, and When to Replace
Vincent Zhang | Jul 04, 2026
The 6N2 + Dual-FU19 Vacuum Tube Headphone Amplifier: A Technical Guide
Vincent Zhang | Sep 06, 2025
The Matisse Tube Preamplifier: A Deep Dive into a Hi-Fi Legend
Vincent Zhang | Aug 31, 2025
Marantz M7: The Legendary Tube Preamplifier That Defined an Era
Vincent Zhang | Sep 08, 2025
A DIY Guide: Building a Power Transformer for an EL34B Push-Pull Tube Amplifier
Vincent Zhang | Nov 21, 2022
真空管のモデルと交換の概要
Vincent Zhang | Jul 12, 2026
Cathode Resistance in Tube Amplifiers: Bias, Gain, Heat, and Practical Selection
Vincent Zhang | Sep 24, 2025
Design and Analysis of a 6N3 Tube Preamplifier with Tone Control
Vincent Zhang | May 14, 2026
Vacuum Tube FM Radio IF Amplifiers: Understanding the 10.7 MHz Stage
Vincent Zhang | Mar 28, 2026
Soft Start and Delayed B+ Power-Up Circuits for Vacuum Tube Amplifiers — Professional Revised Edition
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