I bought a Guild Thunder 1 Twin on ebay. The volume knob is push/pull, when pulled you get a brighter sound. There is a HUGE difference between the regular setting, and the bright setting (when pulling the knob). The bright is as advertised, but when playing it normal (with the knob at it's regular setting), the amp is muddy. I haven't had the amp serviced or checked out since I've owned it. Is this how the amp sounds, or do I have an issue? The reason why I'm curious is because when on the bright setting the amp sounds amazing, just a bit bright.. I know this is an old amp from the mid 60s, and it's probably due for a servicing, but before I bring it in, I just want to know if the amp is supposed to sound the way I described, with such a drastic sound change when pulling the volume knob, or if it's not supposed to be like I described.
Thanks,
-Adam
Thanks,
-Adam