Roland HS60 going into Input 1 on Komplete Audio 6. Gain is at about 40%.
This is from part of a recording before any sounds were played, so it was recording "silence."
Then that's 4 instances of GGain all set at +12db.
The JS vumeter has it at -80db before all the extra gain.
With the gain on Input 1 turned all the way up, but the HS60 turned off, Reaper shows it peaking at -84.8.
I can't compare KA6 to other interfaces, but I love it. It feels great and the sound quality is better than I need, but of course that's me and not you. Hope this helps.