Recently bought an Amplifi TT.
The guitar I'm using is an Epiphone SG G-400.
I don't know if it's normal behaviour or if the amp is broken.
When I see tests and reviews on youtube ppl seems to change between tones with ease just experiencing the tone differences with little volume difference.
On my case if I change between a clean tone and some more distorted one the volume difference is huge and the distortion seems hugelly exagerated.
To use most of the distorted preset tones I must lower the guitar volume to minimum and edit and lower drastically the Gain for that tone.