Conversation with a valve amp engineer

[Atmasphere]

I think preconditioning *might* do the burn-in as well. Its my opinion that many audiophiles experience tube burn-in as part of the process of using tubes that have not been preconditioned.

 

[hltf]

Thanks again. l tried to find someone who would be prepared to do preconditioning for new KT 88 tubes that l want to buy, but no luck. Would you have any ideas? Thanks.

 

[Atmasphere]

You can do it by putting them in the amplifier and running it in Standby, which is to say without B+ applied to the tubes. If the amplifier does not have a Standby function then its a bit of a trick. The next thing I would do is find out if the amp has a separate fuse for the B+. If so you could remove it and that would work also. The tubes need to be preconditioned for at least 72 hours.