hobby #90

Vacuum Tube Audio Amplifier Building

Building hi-fi audio amplifiers using vintage vacuum tubes (valves) — single-ended triode designs, output transformer winding, chassis layout, and the warm harmonic distortion that solid-state can't replicate.

Twenty-Five Turns for Every One the Speaker Needs

A 5-watt Class A amp draws 30 watts from the wall. The other 25 become heat. Audiophiles call this warm.

code-a-day tied to this hobby

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