Jadis OR bias value for Mullard RL34 and KT88 help

I think you should be fine with the Mullards, Mattzack2.

The one thing I would say is to not put more than one variable in play at a time (Scientific Method), so that you can accurately assess the effect of each change. In other words, you should go back to your old 12AX7 for now to understand what the Mullard EL34 are providing. As the JOR employs the classic Dynaco (MKII, MKIII, ST70) circuit, the driver tubes play a pretty important role. Once you have a good handle (100 hours) on the Mullards, go ahead and reinstall the TungSol 12AX7. If things don't work out and you don't like the Mullards, perhaps I could purchase the from you?

The JJ E34L likely took a half day before I began to notice them, and a weekend (daytime, only) to really settle in. My speakers are pretty efficient, what are you driving with the JOR? Also, please remember to recheck/reset the bias.

Yes, same e-mail address, Doctor - TRELJA@aol.com and TRELJA@ultravioletaudio.com I've tried writing to you over the past year or so, but have had all my attempts bounce back to me. The NYC Show was great. In my most conservative estimation, easily five times the headcount of last year, with a much better venue. I'm sure as much of a success as turned out did this year, there should be substantial growth for next year's show.

I am driving a pair of Dali Helicon 800's at 89.5 db effiency which are no problem for the JOR. I even drive them with a 16wpc Carissa 845. I also have some Gemme Tantos that are a little over 90 but I prefer the Dalis
I am hoping to better the sound that I have with the GL kt88's. I love the holographic detail that I get with them. So far the EL34's seem very quiet in the bassiness and I'm thinking that should be improved with different 12ax7 tubes. I'd like to learn how good I can get the JOR to sound.

Which speakers do you have?

I played music all night and when I checked the sound this morning it was starting to fill the room and was emphasing more detail. I am much less skeptical about themnow.

Glad to hear the EL34 are improving. Here's hoping they get to where you hope.

The speakers I've paired up most with my JOR are Coincident, about 91 db/W. I've also had the Gemme Tantos - the first iteration, where the cabinetry was done in Canada, not China, and they are not especially easy to drive. Yes, you can certainly play and perhaps even like them. But I found they more come alive with emphatic solid state amplification.

Please keep us posted as to what you find over the course of the weekend.

For what it's worth, the current production triple mica Shuguang 12AX7B are the sleeper of this tube. The Doctor (Mechans) and I confirmed this several years ago to our surprise. We then hosted a tube shootout where they bested some very highly regarded old 12AX7 variants, and finished in the top three overall.

Very interesting .
I will check out those 12ax7's. I just bought these Tungsols but I am going to take your advice on them.
The Mullards have started filling the room and the lesser bass has become a nonissue. I am going to run it mostly Continuos over the rest of the weekend.