Power Tubes
Power tubes, or output tubes, continue to amplify the signal sent from the preamp section so they can drive the speakers. Each set of power tubes will draw a different current (measured in milliamps), affecting how fast the signal gets passed through your amp. The speed of this current will have a big impact of the tone of your guitar amp.
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Penta KT88SC
$57.95More refined, detailed. Good for hi-fi and guitar alike. ****OUT OF STOCK**** Please order RUBY KT88V-STR's.
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Ruby KT88-STR
$44.95Select 3-hole plate KT88 made by Shuguang in China. Also re-marketed as Valve Art.