Thanks for the replies, I'll check it when I get home today.
Did some playing around during the weekend and I noticed some interesting stuff. First off all, when I max out the input gain on the Focusrite I can see the recording level in the software on my PC which is clipping (or nearly so), but that still gives low volume out to the main monitors (also connected to the Focusrite). Note that also the recorded sound wave shape in the track is barely visible (almost a flat line), indicating low input levels.
The main volume level for the monitors is OK. Meaning, if I play a imported MP3 which I use as a backing track it sounds quite fine volume wise.
Isnt that a bit wierd? How can the input be clipping with the actual output to the monitors being that low?
Another thing I noticed is when I connect my guitar directly into the Focusrite the situation is exactly opposite. Even without any gain the input can still clip, but the volume on the monitors sounds fine. However, I would really like to use the DT25 sound and its effects coming from the HD500X of course.
When I'm home I'll have a look at the software settings as suggested and post my findings.