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Biasing Tubes On Od Pedals


Hi Guys,


I know this is not really the right palce for this, but I can't find anything on the web and you guys seem to know what you're talking about.


I have a Blackstar HT-Dual and new Vox Straight 6. They are both Hi-Voltage tube overdrives, running off low voltage with a step-up system.




I didn't realise until recently that replacing tubes meant having to check/adjust the bias. Is this not necessary on guitar pedals? It seems like it would be necessary but nobody on the web seems to mention it as far as I can find.


Any insight?


Thanks all.

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As far as i know only power tubes need biasing not preamp tubes like in you,re ht.

You are correct. There is no need to bias pre-amp tubes.



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