Tube Amp vs Solid State – What's the Difference?
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Differences Between Valve & Solid State Amps - Does It Really Matter? Which Sounds Better?
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VALVE/TUBE Amp Circuits EXPLAINED! | Too Afraid To Ask
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How Tube Amplifiers Work, Part 1: The Power Supply
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Outrageously Sweet: DAYTON HTA100 Integrated Amp
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Why do tubes sound different than transistors?
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The $183 Tube Amp will RIVAL a SOLDANO!
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What do vacuum tubes (valves) do?
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