Because I use an external treble booster and is the only way to avoid clipping...Below 5% the gain decreases so, yes, it will be quieter. Why are you setting it to 0%? You shouldn't need to go that low.
Plug the guitar into the Axe Fx and put the Treble Booster in a loop using either Input/Output 3 or 4?Because I use an external treble booster and is the only way to avoid clipping...
Any advice if I want to keep using the external tb? Maybe using rear ins?
For Brian May mode the external treble booster makes the differenceOr simply use the Treble Booster that's built in. It's not like there's any magic to a treble booster.