[safebelayer]

I understand that there are at least a couple of folks on this forum that are familiar with this amp and how different tubes effect the sound.  I will be mating the amp with the SongTowers (standard version) and looking for that sweet midrange, but also getting as tight a bass response as possible.  Is this a dream or a possibility.  I listen to alternative rock, bluegrass, jazz and other rock styles.  Thanks for your help.

[trianglezerius]

Try replacing the stock el34's with jj or gold lion kt77. There an el34 on steroids.

[safebelayer]

I didn't know that the el34 could be replaced by kt77s on a jolida 302B.

[vortrex]

I used the SED "winged C" EL34's with my Jolida and ST's and it was a big improvement over the stock EH tubes.

[sebrof]

I would consider rolling the 12AT7s and 12AX7s first. I got at least as much if not more improvement in the JD1000 amp by doing this, and it can be a lot less expensive. The JD1000 is basically a doubled up version of the 302 (100 watts vs. 50). then I'd go for the power tubes in 6 months or so.
Just a thought.

[safebelayer]

and what would you recommend for tubes for the 12AT and 12AX?  Did you find help in the midrange and bass?

[trianglezerius]

I didn't know that the el34 could be replaced by kt77s on a jolida 302B.

Email Jolida for tube replacements and you'll see KT77 and others you can substitute.

[sebrof]

and what would you recommend for tubes for the 12AT and 12AX?  Did you find help in the midrange and bass?

I ended up with Sovtek 12AX7LPS and Mullard CV4024 at the recommendation of Jim McShane, tube vendor. I replaced the stock tubes.
The improvement that I heard was a smoother sound pretty much top to bottom. An edginess with the stock tubes, not with the new tubes.

http://www.mcshanedesign.net/

I just saw someone recommend Russian 6P3S-E's for the outputs. I didn't hear them in my Jolida but did use them in another amp I have and think they are good tubes. McShane also sells them. They are NOS and not expensive. I'm not sure of the compatibility with the 302 though so I would check with Jolida.