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Vincent Zhang | Jun 21, 2017
Sweat and Mellow Sound from IWISTAO Tube FM Radio Built-in 6P1 Power Amplifier
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The Enduring Legend of the TDA1514A: Why This 90s Hi-Fi Chip Still Rocks
Vincent Zhang | Jun 27, 2017
Beautiful Enclosure and Wonderful Sound form IWISTAO HIFI 4 Inches Full Range Speaker Monitor
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Marantz M7: The Legendary Tube Preamplifier That Defined an Era
Vincent Zhang | Mar 19, 2026
How to Choose the Right Output Transformer Impedance
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