I have the same problem on a TASCAM DM4800. Both the mixer and Logic are clearly in the safe zone whereas the utrack24 overloads and with digital distortion, the tracks become unusable. RuudNL, how exactly did you create the attenuators? In my case, I am using a TRS to DB25 snake, and I soldered the tip and ring together so the insert tap from any mixer would not break the signal for a FOH mixer. I would like to know how to tame down the signal by say 15dB from the TRS side of my snake. In an unrelated discussion, Tech support in a different forum suggested a 200 ohm resistor between tip and ring, but I don’t know why they recommended that. Maybe same reason as attenuator?