Hey, my little orange Ad-5 suddenly started sounding really muddy at my last practice. Ive had a repair guy look at it and he's checked the valves and electrics and he says all is fine? I checked the speaker cone and that hasnt ruptured. What the hell could it be! Speaker coil? Any help or advice would be great! By the way, I always play it cranked if thats of any relevance!
Fuzzy amp? I fail to see the problem. Just start playing doom metal :P

Kidding aside, replace the tubes.
Gibson RD Silverburst w/ Lace Dissonant Aggressors (SOLD)
Electra Omega Prime Ceruse
Fender Franken-Jag Bass

Amps and the like:
Laney VH100R
Seismic Luke 2x12
Dunlop 105Q Wah
Gojira FX 808
Line 6 M9