Just put a qaud of these in my VH4. They smoke! I'm really impressed. The clarity and boldness of a 6l6 and still has the nice mid range of an EL34. Highly recommend giving them a try.
I might try the 6CA7 at some point; been curious about them for sure. I really dig the JJKT77! Have run them in numerous amps, currently in an MCII, and they sound awesome every time. JJE34L are pretty badass also, at least in the Wizard, not liking them as much in the Uber yet...probably just need more time to tweak and use the right OD. JJKT77 in the Uber
I actually was running the Jj E34L’s previously which I dig. As far as the KT77’s the 6CA7’s seem to have a bit more body through the middle compared to The 77’s. Again I’m pretty smitten with these 6CA7’s!!
To me they create a really specific sound.
You’ll either love it (evidence above) or hate it.
Kind of like a 6550 without so much bass.
Creamy and aggressive , but they have a frequency spike in the high mids
that I just didn’t like after a while. This is with V30’s.