Originally Posted by gibosi
The ECC83 / 12AX7 are 12 volt tubes. And therefore, a different mod, similar to AFB's "Flying 12AT7 tube", is necessary. I am assuming that AFB is currently working on just such a mode that is a little more elegant and practical. :)
Well, actually, I have had a DIY adapter for almost two weeks for those 12V tubes lol; I just haven't taken pictures of it to show my Schiity -some would even say Matsushiity- work. Truth is, since I thought that either the tube I had or something in my soldering was bad (intermittent dropouts in either channel every couple of minutes), I didn't dare show what I did until I knew it worked.
Fortunately, the problem came from somewhere else in my sound chain (it happened regardless of tubes I used) which I have fixed since, so I'll post pics of the "adapter" soon! Don't get your hopes up too high though, it's basically a compact & clean version of the "flying 12AT7" mod with shorter wires (actually so short, I had trouble getting the wires to go to each socket...). But, I'm sure someone could just add some shrink wrap and make the same adapter look at least decent. Also, I used stranded wires because the wires are only soldered on one end and "stuck" in the socket adapters on the other end, but come to think of it, solid core would definitely be the way to not get a wobbly adapter.
Originally Posted by gibosi
I am not surprised that you like these tubes. The 6BQ7A is often shipped from the Schitt factory with their Lyr. In researching the 6BQ7A and the 6DJ8, I spent some time reading the two Schiit tube rolling threads to help me decide which tubes to search for. While many people preferred the more expensive 6DJ8, others really liked the 6BQ7A. For sure, they are an inexpensive way to get a taste of the 6 volt dual triodes.
I have spent a little time listening to the Siemens and Mullard 6DJ8 I recently received, and very predictably, their sound follows the "British - Holland - German sound continuum" (copyright AFB lol), with the Mullards being the warmest and the Siemens being the most neutral. Further, the Mullards have a very smooth top end, while the Siemens have the most "air". And of course, the Amperex are in the middle. I need to spend more time listening to these three tubes, but so far, first impressions, I think I prefer the Amperex.
I haven't even dared to go delve in the Schiit thread yet, as it seems like an other pool of varying opinions that would just drain my wallet quicker than buying DR tubes lol... But I gather that there aren't that many 6DJ8 tubes considered top tier, so the choice isn't that hard considering how much feedback there is on the internet. Philips, Siemens, Mullard, some German manufacturers and an occasional US tube, but you quickly go into second tier. I'm not buying a pair of Siemens CCa for $300 shipped from some crazy country quite yet!
For 12Ax7 types -different pin layout than 6DJ8 tubes indeed- it is the same thing with perhaps more variety, if only because it's a large family; there are maybe 3-5 top recognized European tubes, and then all their iterations in time, sprinkle a RCA or so, and you don't have that much to pick out of essentially.