Have you had streaming music clip out with chord Dave?

Is there a network switch in the chain? Or a copper to fiber optic Ethernet converter?

And turn Leedh volume off in Lumin. 

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. 

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.

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

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

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.

Great questions.

streamer= Lumin U2 feeding M Scaler with Audioquest

diamond USB. M Scaler to Dave via Nordost Valhalla XLR

interconnects. The change that happened was switching out

Chord Hugo TT2 for the Dave and a Bluenode 2 for the

Lumin U2. Th

1. Are you using proper digital cables between mscaler and DAVE? These are supposed to be 75ohm Digital BNC. Not regular RCA interconnects with BNC adapters.
2. Do you have upsampling enabled in the streamer? If so, disable that option.
3. what interface is used to connect streamer to mscaler? Is it USB? Is the USB cable working properly? Have you tried another USB?

4. Have you tried streamer to DAVE direct without mscaler in the setup? Does the issue persist without the mscaler in your system?

please list streamer make and model, usb cable make and model, digital cables make/model, streamer settings and if you use Roon or not.
Also list Ethernet cable and setup - speed, switches, etc

My bad, I wasn’t very clear. It’s the music that loses time, beats, a word and a half.

it just recently started after swapping my DAC. The streamer has changed but it was doing it with the previous streamer as well. I’ve rebooted everything multiple times to include the router, which is hard wired to the streamer. It only happens with streaming no other source. Very frustrating when deep into listening to a passage and then it’s as if someone presses the mute button on and off.  Help

Does the music cut out or is it just the display on the DAVE that goes blank without interrupting streaming? Not clear from your post.
If you get the music interrupted then try rebooting the streamer. Power off, unplug, wait a bit, connect power and boot it up. If it doesn’t help, keep streamer on and reboot the dac then the mscaler.

Blank the display on the Dave? Or the steamer?

Yes, that is normal. sound unaffected, right?

I couldn't rememer why so I looked it up.  

the memory blanking is normal - its because when writing the config settings to the flash memory you can't read at the same time, so I have to blank the display.