Long enough if you treat the amp right.

A lot of people swap them out anyways. Cruddy stock tubes methinks.
Quote by zgr0826
My culture is worthless and absolutely inferior to the almighty Leaf.

Quote by JustRooster
I incurred the wrath of the Association of White Knights. Specifically the Parent's Basement branch of service.
Depends how often and loud you play. If you play for a half hour once a week with your volume on 2 then they will last forever... literally FOREVER
so you mean if you use it as a sorta practice amp with low volume/pedal for distortion the tubes last a lot longer?
most likely, they'll last a long time. but they can go at any time, sorta like a lightbulb.
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