Have you had streaming music clip out with chord Dave?

The other change was i was using optical from the 

node to the M Scaler and now USB.  No issues 

ever with tge node and optical.

There’s no possible way you can connect the Mscaler to DAVE via XLR. The connection should be made using two BNC cables. So how are you connecting these two components together - Mscaler to DAVE.

Next, check Lumin settings and turn off resampling/upsampling.

Also make sure the only digital output from Lumin to Mscaler is USB. You shouldn’t have any other digital cables in the Lumin. In the Lumin menu select USB under Digital Audio Output Settings. All other connections should be set to Off. 

Refer to manual here

https://www.luminmusic.com/manual/general-settings.html

My bad, BNC is accurate. Duh…xlr to the pre.

I’ll check the settings in the Lumin, but remember 

It was happening with the Node using optical to the 

scaler…??? That’s why I keep looking at the Dave

and wondering what am I missing. Lets keep stirring

this pot.

Make sure settings in Lumin are correct. Start there. 
Then take the mscaler out. Go from Lumin direct to DAVE via USB. Eliminate one potential culprit at a time.