Ruby Tubes
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Ruby 12AX7ACZ HG
$13.95Highest gain 12AX7, great for metal and hard rock. Selected high grade JJ ECC83.
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Ruby KT66C
$39.95Great cleans, with a nice grind. This Ruby tube is a re-labeled Chinese Shuguang tube
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Ruby KT88-STR
$59.95Select 3-hole plate KT88 made by Shuguang in China. Also re-marketed as Valve Art.