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Topics - GEAR-MAN

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Randall Tube Amplifiers / RD20 Tube issues
« on: October 25, 2016, 01:34:02 PM »

Just wondering of anyone had exchanged pre amp tubes and found issues like no sound and
can only use the ruby 12ax7 in the v1 section. I exchange it to mullard 12ax7 and found no sound. the gain section is dead. even if i swap out the other 12ax7s... no sound... i did notice a orange colored tip on the nipple of the 12ax7...all the others had no color tip...
the clean sounds good, so i put back the original ruby 12ax7 , and sound came back..but the gain is low...

it jus sounds terrible flat and no dynamics in the pre amp section.....

any one??

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