can u by changing the power tubes raise the power of the amp?
Not really. Most amps use more tubes to gain more power ive yet to hear one of using different tubes
I think it can be done but I have never heard of anyone doing it. If it can be done it will be a complicated procedure that needs a lot of other mods on the amplifier. Not recommended.
Changing tubes alters tone slightly so it can sound "LOUDER" without it actually being louder. The only way i can think of getting more power is if you add more tubes into the amp but that can be complex and expensive to doas there are a lot of parts to replace
Some amps are designed to take a variety of tubes, and each different type will put out a different level of power. So, yeah, depending on the amp.