My 210 Sixty Five sounds dull on most settings, and differences on the tone settings down to the slightest nudge (like a 1/16 of a number) radically change the amp from sounding good to just totally horrible and hollow. When I got the amp, it had the wrong kind of fuse in it, a dead tube and the bias was way off. I've since corrected these issues but for how much 'better' it sounds than when I got it, these fixes seem to have only revealed a more substantial problem.
Is it possible that this could be the tone pots themselves? It almost seems as if the inconsistencies in the tone settings are with the tone knobs themselves -- they aren't performing as they ought to be, as though they have aged or aren't fully connected. Getting a good sound out of the tone settings feels like a gamble.
The amp appears to be a transitional model, an early solid state model with a chassis number implying that it should have a third tube but with a medal cover over where the tube should go. This has been corroborated by three techs, two via email and one who looked at the board / made the fuse/tube adjustments.
If that's the case, and I just have a really early solid state model, am I better off just selling it and trying to find a version with a 12AX7 or an RD50? Articles I've read cite the early solid state/two tube versions of the amps as being underwhelming, and hold the RD50, with Leo Fender updated solid state components, as being vastly superior to those early solid state models.
Or is it possible that there is still something wrong with my amp that the tech I took it to failed to diagnose? This has been really discouraging, I'm a working musician (I don't make a lot of money, I saved up to buy this amp) and it has yet to be anything other than frustrating. I'm getting impatient but wanted to inquire here before just selling the thing and writing it off as a mistake on my part.