Power tubes for RK100 low bias

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drago
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Power tubes for RK100 low bias

Post by drago » Fri Sep 04, 2009 1:41 am

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. :wtf:
Anyone else have same? anyone try Tungsols 12ax7 yet I have used them in Badger 18 & 5150 very meaty, :shifty: sound 3d. Little bit loose on bottom end though.

RK100 is Conan of amplifiers

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