6CA7- ‘they are exceptional tubes’

from customer Lyle C. by email:

“Greetings,
I bought a quad of the Shuguang Black Treasure 6CA7’s from you recently and love them. They are exceptional tubes, absolutely killing the EH 6CA7 and Tung Sol reissue EL34’s I’ve tried.”

‘they sound better than the best Mullards I have’

– from customer Richard J.

“Dear Rachel, First I would like to say Thank You for sending the Shuguang Anniversary EL 34 Black bottle tubes. Amazingly they sounded better than the best Mullards I currently have on hand right out of the box. I have never had a tube sound so good with no break in time, and I have been using tubes since 1963. Thease are trurly an amazing accomplishment. ”