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Ampera

The vacuum tube design companion. From theory to circuit.

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339 tubes · 286 SPICE models · 54 guides

Catalog updated · 2026-05-19

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12AX7 EL34 6L6GC KT88 300B 12AU7 EL84 6V6 2A3 5U4G All 339 →

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Loadlines Biasing Push-Pull SET design Output transformers SPICE simulation All 54 →

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