![]() They’re renowned for making music sound fat, warm, and lush - an addictive quality that we love here at TMS. Instead of modern-day silicon transistors, tube amps rely on vacuum tubes to convert electrical currents and amplify the audio signals that eventually make their way out of your speakers and headphones. ![]() You can dive more into the construction of tubes here, but the gist of it is that, like light bulbs, vacuum tubes are glass bulbs containing a heated filament, metal grid and plate, and some rarified gases in a near-vacuum that allows the free passage of an electric current. They’re vacuum tubes, and they’re behind the amplification of the audio signal you’re trying to enjoy. Those amps you see with the glowing glass lightbulbs sticking out of them…. Sylvania Tubes | Allen McGregor What Are Tubes?
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