My RK100 has Groove tubes in it or should I say JJ/Tesla rebadged tubes in it
Just wondering if they are original because the bias scale number on them is only 4 suggesting early break up & low bias idle, is this standard from factory.
Anyone else have same? anyone try Tungsols 12ax7 yet I have used them in Badger 18 & 5150 very meaty, sound 3d. Little bit loose on bottom end though.
RK100 is Conan of amplifiers
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