I've recently picked up an A30 combo and it just doesn't sound quite like my old head did.
There is a harshness or spikyness in the upper mids and top end. Don't know how to describe it really, maybe artifacts. It's quite ice picky, I know they are a little bright but it's way more than I remember.
Don't know if it's relevant, one of the speakers has been swapped for a greenback clone (warehouse green beret to match the db of the v30). I would have thought that would smooth it out a little if anything. I have the original v30 if that could be what I'm hearing.
It definitely doesn't have as much gain as my old one by quite a long way. They are not high gain amps but with my tele it doesn't go further than a light crunch.
Took it to rehearsal last night and it didn't feel as loud either. It was loud enough but i remember my old one as being frighteningly loud, this was just quite loud.
A couple of minor things. The main volume on channel 2 is completely off until 9 oclock, it's just a very weird taper.
The bright/vintage switch doesn't make much difference to the sound, not as much as I remember.
Volume on channel 1 seems to be developing an all or nothing spot, it's whisper quiet and then the slightest movement and it's deafening. More like a switch than a pot. It doesn't do it all the time which makes me think it may be failing.
I swapped out the preamp valves from another amp. It helped a bit with the artifacts problem but not 100%
So based on that would you A - revalve or B take it for a service.
I probably can't afford both right now so wondering which one might be the best approach.
Sorry for the essay!