WA22 let's roll some tubes (Done Mod, Burnning-in) - Page 27

Has anybody discussed the use of tube adaptors in the WA22 with Jack Wu? 

I know Mikhail sold tube adaptors for Singlepower amps and everybody by now should know he was a fraud.  His amps also have failed at an alarming rate.  Most failures probably resulted from poor construction, but it is possible that the use of tube adaptors he sold hastened their demise.

Since then, a number of people who understand something about tube amp design (Kevin Gilmore, Nikongod) have written elsewhere on Head-Fi that tube adaptors are a terrible idea and that one should only use the tubes the amp was designed for. 

In the same vein,  I know of no manufacturer of tube preamps or power amps for use in speaker rigs who has ever sanctioned, let alone recommended, the use of tube adaptors in their components. 

x2. Thanks for bringing this up.

Craig Uthus (Eddie Current LLC) advised me against using tube adapters in his Zana Deux SE. The specific adapter is the 6C8G to 6SL7. He emailed me:

"You can't put a 6SL7/6C8G in the ZD because it has twice the heater current, and it will not bias up correctly."

This adapter is specifically made to use 6C8G tubes in place of 6SL7 but Craig strongly advises against the practice in his ZDse.

Up until last night I used 6F8G to 6SN7 adapters in my WA22. Now I've put the 6SN7 tubes back into my Woo and I am wondering if I should ever use those adapters again. I just don't want to use an adapter that wasn't sanctioned by Jack.

Quote:

Originally Posted by Clayton SF 

Up until last night I used 6F8G to 6SN7 adapters in my WA22. Now I've put the 6SN7 tubes back into my Woo and I am wondering if I should ever use those adapters again. I just don't want to use an adapter that wasn't sanctioned by Jack.

I do use the 6F8G to 6SN7 adapter with my WA22 few times.  I did emailed Jack this adapter, he did said it is ok to use and he do sell them.  From what I read, the spec on the 6F8G is the same as 6SN7. (I may be wrong, I can't find where did I saw that)

Quote:

Originally Posted by jc9394 

I do use the 6F8G to 6SN7 adapter with my WA22 few times.  I did emailed Jack this adapter, he did said it is ok to use and he do sell them.  From what I read, the spec on the 6F8G is the same as 6SN7. (I may be wrong, I can't find where did I saw that)

Well that's a relief. I can now throw the 6F8G's back into the mix.Thanks!