The NOS tubes I purchased w/the amp are matched pair RCA JAN 6C8G + 2 Woo adapters w/pigtail that attaches on top. They look fantastic & the amp sounds quite good as is. No idea if these 6C8Gs can be improved on or not.
First up are swapping in the recently purchased 6BL7GTAs (2, 1 in each power tube slot) + NOS Mullard GZ34 5AR4. Then I'll check the sound. My objectives (beyond just playing around) are to get a bit more bass presence, possibly a little more on top of the treble. The mids are pretty fantastic as is...
BTW, I do have 2 planars that may tax this amp.
- One is the ZMF Ori, a real power hog. I may not even bother trying it on the WA22, no matter what tubes are in it. I'm extremely happy w/the sound I get out of the V281 on that, also very good results on the Liquid Carbon v2 (small but potent amp).
- The other is more efficient: a "unicorn" pre-fazor LCD-2.1, one of the older ones. Again, I get great sound on this via SS, also from the Woo WA3 (its impedance is 70 ohms, which I find is high enough to benefit from an OTL). I will try the LCD-2.1 on the WA22.
- Another planar is quite efficient (HEX v2). Already briefly tried it on the WA22 w/good results.
Re ECC35s, 2 questions for any who use these:
- Are ECC35s considered better than the 6C8Gs I'm currently running? If yes, what sonic gains could I expect?
- And would I need an adapter for them? The only ECC tube listed in the WA22 manual is the ECC32 (no adapter required)
Thanks to everyone here for a most informative thread (a real learning experience).