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Vincent Zhang | Feb 19, 2026
ECL86 (6GW8) Vacuum Tube: The Complete Guide for Hi-Fi Builders
Vincent Zhang | Feb 26, 2026
OPT vs. OTL: The Two Defining Philosophies in Hi-Fi Tube Amplifiers
Vincent Zhang | May 12, 2026
Fender Tube Guitar Amplifiers: The Complete Guide to Circuit, and Key Parts Replacement
Vincent Zhang | Apr 02, 2026
DIY 300B SET Stereo Amplifier: Circuit Design, Parts List and Step-by-Step Build Guide
Vincent Zhang | Jul 04, 2026
The 6N2 + Dual-FU19 Vacuum Tube Headphone Amplifier: A Technical Guide
Vincent Zhang | May 08, 2026
EL34 vs 300B: A Comprehensive Technical Comparison for HiFi Enthusiasts
Vincent Zhang | Jun 20, 2025
The Unsung Hero: Demystifying the Passive Preamplifier
Vincent Zhang | May 14, 2026
Vacuum Tube FM Radio IF Amplifiers: Understanding the 10.7 MHz Stage
Vincent Zhang | Sep 10, 2025
Building a 6SL7-Driven EL34 Single-Ended Amplifier: A Deep Dive into Classic Tube Tone
Vincent Zhang | Jan 06, 2026
Overshoot and Ringing in Tube Amplifiers--Causes, Detection (Square-Wave Test), and Practical Adjustment Methods
Vincent Zhang | Jan 07, 2026
DIY Tube Amplifier Testing and Adjustment --A Practical Engineering Guide
Vincent Zhang | Apr 22, 2026
Tube Buffer Preamplifier: The Complete Guide for Audiophiles and DIY Builders
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