Amperex 6DJ8 Tube Questions

All the orange label stuff is later than the white label/Bugle boy ones (which I think actually sound better - the earlier ones). White label is from about 1958(?) - 1962ish. Orange ran until 1970 or so. Green label was after that. World logo = doesn't mean much. Getters varied from A-frame (aka dimpled disc getter), to Halos large and small. No D-getters in this era, AFAIK. The getter doesnt' affect the sound of the tube, it's just a way of dating it to some degree. (though not really needed in this case since they are date-coded anyway).

-Ed

I've used all of the above (except green label) in my Music Reference RM5III preamp and found that, in my system, they break into two groups tonally. Of the O-getters, I love the Orange Globes the most. I agree with Tubelore Joe's evaluation. Very well balanced, great bass, airy, extended treble without etch or harshness. The A-frames all sound harsh by comparison to me, tonal balance tilted to much towards the highs. Of, course if that's to your tastes, ymmv.

I’m aware the previous posts are from 2004.

I’ve also tried quite a few of the Amperex/Philips 6DJ8, 6922 and 7308 tubes. Says photon46 above, "The A-frames all sound harsh by comparison to me, tonal balance tilted to much towards the highs. Of, course if that’s to your tastes, ymmv. "

In my experience, orange (NOT orange globe) Amperex 6DJ8 A-frames with dimpled solid disc getters in my CJ Classic 60 amp exhibit no harshness. There is a full, very nicely balanced, musical sound. I won’t bother to go into details about what else is in my system.

I’ve also read Joe’s Tubelore descriptions, often getting very different impressions from the same designated tubes in my system compared with what he experienced while listening to his own system(s).

Per what has been said countless times before, to find out what suits your enjoyment, listen to all the tubes you’re willing and able to in your own system.