Tube Rolling 12AX7 - Need Advice/Suggestions


Have a Jolida SJ-502A Tube Integrated who's tube compliment is currently (4) Tung-sol 6550, (2) Tung-sol 12AX7 and (2) NOS RCA 12AT7.

Recently purchased a Jolida JD-100 CDP which currently is using (2) NOS RCA 12AX7. The person I bought the CDP from kindly (thanks Colleen) gave me a stash of some 12AX7 tubes which include pairs of EI Elites 12AX7E ,Gold Series Groove Tubes 12AX7-M, and EH 12AX7.

Right now, the Tung-sol in the amp, and the NOS RCA in the CDP sound good, but wondering what other 12AX7 combinations might sound as good or maybe even better? Anyway, was curious about what some of you more experienced "tube rollers" might think would be the best combination of 12AX7 to be running in the CDP and AMP?

All comment appreciated.
cleaneduphippy

Showing 1 response by fishboat

You might do some searching on A-gon as there have been quite a few discussions about tube rolling with the Jolida 100.

Raytheon 5751 NOS is an excellent choice(I ran these until one failed, I've now found a replacement, but haven't switched back), if you can find them. They won't be cheap..last I saw they we running about $75 each.

Amperex globes or BB's are very good(I'm running these now).

You might try Siemens tubes..also very good & pricey to match.

GE 3x mica black plates..while the rage for some were not as good as the above(IMHO).

Where you net out depends on what happens to the signal once it leaves the Jolida. Everyone's mileage varies with their equipment & ear.