I‘ve a really crazy and unexpectable issue, with my new Code 100 Head, maybe someone knows what is going wrong?

The first head had an absolute  amazing virtual sound about a 12“ celestion box, but the headphone sound was extremly ugly, muddy and distorted.

The second amp is completely inverted, a super and really realistic headphone sound, but the box sound is not acceptable, like a walkman, silent ...

Has someone the same issue, that the Code 100 head cannot switch between the silent and loud mode? On both heads wins the first configuration and the other doesn‘t work.

Or, maybe someone has a trick, which Button, or menue flag I have to pick?

Thanks - Boris