Useful Life of PreAmp Tubes.


I have a question to throw out to the forum. When a preamp is in "standby mode" is the rate of tube decay the same as full use of the unit? I am trying to determine when best to retube my BAT VK 31 SE. Any other BAT owners with some input?

Thanks as always for your help.
ck
Can't answer about standby mode but if 10,000 is a standard for preamp tubes, and it seems to be on many, then keeping it on 24/7 should maintain the tube life for about 13 months. Hope that helps as a start
I retubed VK5i about every 2k hours and always heard improvement. Preamp tubes may survive for 10k hours, but not without sonic degradation.
As best I recollect VK5i does not have a stand-by switch. In any case, I always powered off when not in use for more than several hours. Victor at BAT will likely respond to a direct query.