I am wondering what the next step up in tube amps would be and if spending $2500 to $3500 is going to get me something that will sound significantly better than this amp running what would be considered to be very good tubes?
If you (for now) disregard the prices…..
for me the start of laying down great tubes for me has been the gec6as7g.
they are not cheap. The prices have gone up considerably since i bought mine 5 or so years ago.
these are the canvas or the foundation of what i build the sound on.
for me these are crucial and better than any others that i have used, including we421a and chatham/tung sols
after that you have (even more) personal options depending on what you want and your dac/hps re the 6dj8
for me the Holland pinched waist tubes. Or some better holland (around early 1960s) tubes - say e188cc red valvos (d getter from memory). Nice rounder tones with good detail.
or you can go authentic telefunkens e188cc for neutralish sound. Or siemens cca (from memory early to mid 60’s) for vibrant lively sound.
(i have not bought tubes for 4 or 5 years so i have forgotten most of what i knew when i spent one year purely tweaking my system through tube options)
but are they value? and will you like them? I don’t know.
i’m guessing the pinched waist and the gec6as7g pairs may total about $1600 usd.
for me these are great with my hd800. Better than any solid state that i have used and were food with my auteurs, that i later sold.
for me these tubes make a noticeable improvement. Absolutely.
I liked the stock wa2 tubes. Nothing special but pleasurable. When i tried the stock tubes after coming back from a holiday i enjoyed them. When i put the upgraded tubes back in the amp definitely improved
will you like them? i don’t know
one thing i say about tube rolling is quality over quantity.
for me, if i started again I would buy the gec6as7g, some very good holland tubes amd as a bonus to mix it up either the telefunkens or siemens depending on how lively or punchy i want it.
absolutely ymmv
this is just my 2c from my own personal experience and my own wallet