Origin 20h valves replacement


Hi guys,

I want to exchange valves in my Origin 20h, ordered some from Tube Amp Doctor. After I exchange them do I have to rebias it? Is there a manual for rebiasing? I wasn't able to find anything which would give me even slight bit of a hint about it...

asked 10 Feb 2019 at 04:21 PM

Stepan Dusek
Answers: 1


Hello Stepan,

Regarding your question the ORI20 is a fixed bias so you do not need to rebias it. 


Kind Regards

Marshall Support

answered 11 Feb 2019 at 08:58 AM

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