> This happens in Australia as well where we have 400W PEP limit. At that level, the anodes never get red, so the tubes fail very quickly.

> You will need to exercise your amplifier at full power regularly to ensure healthy tubes.

Thank you for this very important information. The PA has not been used for 10 years. So there is no point in heating the filaments for only 1 or 2 days to hope to degas.

?

I need to heat the anodes. I did not know this particularity.