[PHC1]

Originally Posted by Formerly YB-2

Serge - nothing I read there makes me think they are making their own tubes. Am guessing they are "testing, selecting, & branding" their tubes either at the factory in China or over here.

That said, based on all the positive reviews, I rolled in a pair of their clear-glass 6SN7s in the WA6 and immediate expansion of the sound stage and better detail & clarity compared to the reissue Tung-Sol they replaced. Have a 274B inbound, as well.

https://www.hifiwigwam.com/sophia-el...e-manufacture/