Sleep timer

So my idea is to install a outlet time to my tube pre amp and tube and to kill the power if I fall asleep while listening to music so I can save the life of my tubes. Is this common? Does anyone have any suggestions on the proper way to achieve this? I know it has to be a thing?

Showing 2 responses by gguy767

I'd rather not fall asleep leaving my amp on though.
@testpilot I'm to lazy to get up and walk to the amp and turn it off though...