Trevoire520
Member
What I do is Max the eq then cut back on what I don't want. Works really well on My triple xxx, that and a tube screamer and low gain on the amp.
Remeber that the eq is active and thus it boosts after 12.
Yeah I've found this is a good way to work with the XXX aswell. Max your bass mid and treble, then dial back the mid until you're sounding as scooped as you like (normally about 12-2 o clock) and then tweak your bass and treble to taste.
Cobhc, if you're still struggling then it might be best to get the amp looked over by a tech. As you said the XXX's character is similar to that of a 6505, just a bit leaner really. So if you're really struggling to get anything half decent out of it then it could certainly be a tube issue.