Two kemper amp sounds different on a same profile (Solved)

I've bought a second amp (non-powered) . I have loaded the same direct profile (no cab, monitor cab off, pure cab is off, same volume, etc..). The new one has more bass and thicker than the one i had. Is it possible that is a very old production of kemper or maybe it has some hardware issues or missing some settings ?

I think i will answer this myself. The SPIDIF volume on the old one was all the way up while the new one was all the way down. That affected the sound a lot. not sure why. As soon as i have adjusted them evenly, they sounded identically.