Tube rolling for Jolida 502B

That's interesting, I hadn't yet considered that. I was driving Kestrel 2's myself(for sale on 'Gon) but was offered a good buy on a great pair of Osprey's.
Thanks,
Beernut

Well, I have the older 502A. It's heavily modified (see my bedroom system thru the "System" link).
I still use the stock "winged-C" 6550 tubes & like the overall sound.
The 12AX7 is a Mullard NOS & the 12AT7 is a RCA NOS.
I'm very happy w/ the sound. I like a neutral sound & I think that I'm closer to that type of sound vs. the un-modified unit.

I should mention current tubes are: Electro Harmonix 6550 EH, Electro Harmonix 12AT7EH and Jolida 12AX7A.

Hi,

well, I do own the wrong Jolida amp as well to give you recommendations for powertubes, but here is a selection of tubes I run in my JD302b:

12AX7:
Jolida (Chinese) 12AX7
EH 12AX7 gold pin
EI Elite 12AX7 gold pin
1970s Tesla E83CC Frame Grid gold pin
1980s Jan GE 5751

12AT7:
EH 12AT7
EI Elite 12AT7 gold pin
1980s Mullard CV4024
19??s BRIMAR 6060 T-Series Black Plates

I have not had a chance to listen to all of them very seriously, but so far my favorite is the SED, Tesla, Brimar combination for a little more forward, very lively engaging sound. SED, Tesla, Mullard is slightly more polite and laid back but preferrable if you like a smoother sound.

Probably more important is the question: What sound are you looking for?

Good luck.

Rene

Thanks, lively and engaging is my preference. I listen to a lot of blues and like the vocals right in front of me.
Beernut