dellagratti

I connected my MK I and it works just fine

I loaned my Spider IV to a friend who needed an amp to toil with so I went back to my other brand amp for meantime, I didn't own it long enough to play with. Heres the problem, either all the settings are gone (friend said he did a factory reset holding down "Tap" button when powering on) or all the channels sound the same out the box so to say. What did my friend do to the amp?