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Apr 1, 2026

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Twenty-Five Turns for Every One the Speaker Needs

Vacuum Tube Audio Amplifier Building

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

electronics audio analog making engineering

code-a-day

The Grid Curve Lives in 256 Bytes

Lookup Tables 🔗 Vacuum Tube Audio Amplifier Building

Every tube has a transfer curve. Every computer has RAM. Put the curve in the RAM.

optimizationmemoryanalog-modelingsignal-processingcode-a-day

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🎮 Bias Drift Keep four vacuum tubes biased in the sweet spot as they heat up and drift. Drag to adjust each tube's bias voltage.