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The Ampeg Challenge | Part 1 : What in the Wide Wide World of Sports Is a Goin' On?
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Introducing The Third-Act | The Worlds First All-Valve (Tubes) First Act Guitar Amp - With Schematic
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Dan Armstrong 60 - A Rare Hybrid Amplifier
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Este projeto de motor de 4 tempos com mais de 100 anos NÃO TEM VÁLVULAS!!! Podemos fazê-lo funcio...
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