Chiliarches Posted June 21, 2021 Share Posted June 21, 2021 Howdy all. I have some nice tube monos (VRD monoblocks), but know very little about tube amps. My kid knocked one of the 12AU7s / CV4003s out of my VRDs and wrecked it (bent pins, frosty top, gas seal must be busted). I do have some 12AU7s around I could swap in. QUESTION: In reading the info on the NOSValves website (https://www.nosvalves.com/vrd.htm) it appears that the broken tube is a “phase splitter.” Can I just swap a new pair of 12AU7s to the appropriate position on each amp or do I need to bias them? Thank you! Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted June 21, 2021 Share Posted June 21, 2021 10 hours ago, Chiliarches said: do I need to bias them? No. Maynard 1 Quote Link to comment Share on other sites More sharing options...
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