I had a low output level from Amp-out in AXE I/O problem.
I adjusted the input level of my guitar as high as possible before clipping.
Then, I pushed the ground lifting (GND-Lift) button in the AXE I/O control panel.
It is getting noisier but the output level gets higher without the treble loss.
I am not sure if it just works for me.
What would be the relationship between the Ground lifting button and the output level
of the Amp-Out?