How can I tell when I need to replace my tubes? Describe some of the common sounds of a dying tube
Gibson Vintage Mahogany LP
Line 6 Echo Park
Peavey Classic 30
Seagull Entourage Mini Jumbo
Vox V847A Wahwah pedal
bad preamp tube: buzzy, muddy, fizzy, noisy, shrieky, pops.

bad power tube: volume fluctuations, volume cuts, death.
Gibson SG Standard + 18volt EMG-81 & 85
Mesa/Boogie Mark IV + Recto 2x12
Keeley Modded BD-2
Vox V847a
Quote by one vision
Bureaucrats gonna crat.

Recognised by the Official EG/GG&A Who To Listen To List 2008
^+1 I've found that dying powertubes can sound crackly.
I don't give a shit if you listen to me or not
you'll know, trust me
Quote by Mad Marius
DBZ guitars, love'em. Especially their Les Piccolo model.