i am buying a tube amp be my first in the next week or so, it's going to be my first tube amp and i was wondering how often i need to change the tubes i know it will depend on how much i play but can some give me a rough guideline as to how often i should change them.

btw the amp i'm getting is a randall rg50tc if that makes any difference

Jackson Dinky DKMGT
Randall RG50TC
A few years (most people say 2) if used a lot.
But, IMO, change when they sound like they need changing (bad tone, etc).
Sunn O))):
Quote by Doppelgänger
You could always just sleep beside your refrigerator.

- Ibanez S670FM w/ JB
- Fender 'Lite Ash' Stratocaster
- Fender '72 Deluxe Telecaster
- Arbiter LP Jr. Doublecut
- Laney VC15

'72 Tele Appreciation Group
No need to change them regularly, just when they break or just aren't producing good tone anymore.
my fender hotrod deluxe went for 5 years before i changed the tubes.
I've been imitated so well I've heard people copy my mistakes.
- Jimi Hendrix