How do guitarrists change tone while playing live?

It's a mystery to me if they are like AC/DC and only use some tube amps with no effects. How do they change their tone between songs while they are playing live if they have no effects?How do guitarrists change tone while playing live?
What do you mean exactly by changing tone?

If you mean how they change the tuning of their guitars it's simple they usually just change their guitars! Like there's another guitar ready for them with the right tuning for the next song and so they quickly swap guitars which is usually either already set aside for them on stage or someone from back stage brings it up.



If you mean how they change the tone of their distortion or whatever. Then there are pre-set effects. On the stage before their feet, they have the effect switches. They only press a pedal and it chooses a whole new set of adjustment for different effects such as distortion, compression, reverb etc

Or it can also be done by sound manager from the control room so it may seem they have no effect or do nothing on the stage.

===

lol well in that case you gonna have to keep your audience waiting while you adjust the tone manually on your amp!

You see the control room is vital for any concert, even if it's called unplugged, they still have the sound manager to adjust volumes, amount of reverb /compression and many other effects that are still applied even in an unplugged concert.

hair straightener

faults next to targus mini mouse