KPA SPDIF Out---Saff Pro24 DSP---Reaper PROBLEM

I tried the Reaper forum but no help so far.

I never had this happen before: I am going from the Kemper SPDIF OUT to my interface (Saffire Pro 24 DSP) into Reaper; I was able to record OK, except that the Master Channel volume keeps go down all the way (to -83.7) even though there is absolutely no clipping going on anywhere. Even when I play back the track, it does it again,automatically, on its own.

I have my Saffire Mix Control set to "DAW Tracking" (not Ultra Low Latency).
My SDIF volume on the Output of the KPA is -10.5 KPA Master Volume = 5.5

Does anyone have any idea what is causing the Master Channel to keep setting its volume down?

Quote from Michael_dk

Master channel - is that in the mix control panel?

Yes, exactly.

I tried changing the SPDIF setting in Mix Control from "SPDIF" to "Internal" and everything seems OK so far.

Quote from Michael_dk

I wonder if the clock rate was accidentally set to something different than 44.1 on the mix control when using the kemper as the clock source?

I kept checking Mix Control---the rate was always 44.1 khz.