Power Tube testing - Metal

My Facebook page: My Blog: So while we were designing my upcoming signature amplifier from Randall called the Satan we tried a ton of different power amp tubes. To go to a certain section use the quick links below: RAW SM57 signal: 0:24 - Sovtek 6L6 WXT 0:44 - Tung Sol 6L6 1:07 - JJ 6L6 1:25 - Electro Harmonix 6CA7EH 1:45 - Tung Sol EL34 2:06 - 6550C 2:26 - Svetlana KT88 2:48 - Tung Sol 6L6 / K
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