Have you tried talking to Brendan Biever at Tube World? He has Jolida amps and is pretty knowledgable about NOS tubes for them. I don't own a Jolida, but when I dealt with him he helped me out with my Cary and in the course of normal conversation we got to talking about his gear and the tubes he uses. FWIW.
Tube rolling for Jolida 502B
I have a new Jolida 502 B amp, my first try at tubes. I'm impressed so far, does nayone have experience upgrading the stock 6550 power tubes? Suggestions and or comments appreciated. I'm driving a pair of Meadowlark Osprey's and listen mainly to blues and classic rock.
Beernut
Beernut