Same for me. My mixer should do the job but I don’t use it for the moment.
I made a test with a 0db Sine :
Send OT Cue Out to Input AB with 2 cables.
Red light with
Cue = 127, Master Cue = 16, Gain =0
Checked Input with OT Noise Gate meter :
Full red light is between - 12.3 db and - 11.2 db
Full red light just before clipping with
Cue = 127, Master Cue = 63, gain = 3
(between - 3.3 and - 2.2 db)
Recorded. No clipping. The sine is very near 0db