How long can preamp tubes last?


Good evening Ladies and Gents
Trying to learn! I have had a Shiit Freya + preamp for about 1 year now, and it has about 450 hours of play time, with original tubes.
Is it time to change the tubs? What tubes/brand would be recommended to purchase? 
As far as budget, I really have no idea what they cost.
Also, what does the expression" rolling the tubes" means?

Any information would be welcome.
Thank for reading.
rockanroller

Showing 1 response by hilde45

I would definitely try rolling the tubes in the Freya. Lots of good options for varieties of sound. Consider emailing Jim McShane about tubes, or Brent Jessee. Both are reliable dealers, they know their stuff, and don't try to up-sell. Tubes can be an OCD thing, and they can be expensive, but they don't need to be. Why not try doing one good alternative to what you have and see how it works for you?