does anyknow know this tube and heard / can recommend this tube?
There are two versions as I see so far: 6J3P and 6J3P-E. Seem to be russian production like the "famous" Voskhod 6J1P (EV).
Tube type is 6ag5 which shall work in the Little Dot. They're that cheap it would be a shame not to try'em.
Or do you guys would recommend buying/trying the RCA, Tung Sol, Sylvania 6ag5 ones instead?