Tube Talk

How Do Vacuum Tubes Work & What Do Vacuum Tubes Do?

How do vacuum tubes work? Understanding vacuum tube technology is essential for anyone interested...

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About Matched Vacuum Tubes – Matched Pair; Matched Trio; Matched Quad

Learn how Penta Lab's meticulous matching process ensures optimal performance for your audio equi...

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Burn Tested

Each vacuum tube is burned-in for a minimum of 48 hours dissipating full power with filament, pla...

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