The MKII model is presented in a smaller enclosure than the MKI to save space in the pedalboard. Switches and additional settings therefore find inside:
Still in front panel :
Most use it as a boost to tweak the tubes and slamming a beautiful solo.
Others prefer to color their setup by set it always ON and thus give just enough to make it sound even better.
It has been proven in the pedalboard many users, now your turn! :)