One weird thing is that when I pressed the switch on the compressor to -10
Now i get:
-20 db 1khz sine wave going to compressor at -10 metering pressed on.
In input mode, VU Reads less than 1 db VU
In output mode, VU reads 0 (only with threshold set to 0)
Well, for now the meters are symmetrically calibrated until i figure this confusion out.
Thank you for the help and getting you involved in all this mess.
ART manual doesn't say anything about calibrating the unit, so I am emailing people in ART and see what they are going to tell me.