herbert - changing tubes..

[dhare]

I have had my herbert since may 2006... have never changed the tubes, everything seems to sound and work great, I play at very low volume.. and have only averaged 1-2 hours a week on the amp.

Is it due for a tube change, has the tonality decreased slowly over time that I have not noticed?

please advise.

Thanks,
Dave

 

[shadow070]

if everything works great, just leave it as it is.