Core Machine (Operating system/System info/Roon build number)
Dell i7 desktop running latest Win 10
Roon Version 1.7 (build 511 table (64bit)
Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
Structured Cat 6 ethernet wiring throughout house using a Arris BGW210-700 router
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
Devialet Expert Pro 440 CI fed via Cat 6 ethernet
Description Of Issue
I dismantled my audio rig to clean cable terminations and rearrange a few things. When I put it back together, Roon to Devialet via Roon AIR worked fine but Roon RAAT did not. In fact, when first tried, it made a very loud and garbled sound through the right channel which I immediately turned off. On further investigation I found…
– Roon still recognized the Devialet as Roon Ready but would not allow any adjustment of volume control from the Roon app.
– I then noticed that the Roon Device Setup for the Devialet Roon Ready audio endpoint set all the Volume Limits to 0 including the Device Limits and would not allow any adjustments (this probably accounts for the loud noise and why I could no longer adjust volume through the app).
Something was clearly wrong. Since Devialet AIR worked, I assumed that the ethernet connection was working fine.
I went down the path of reloading the latest Devialet DOS and firmware and config files. Same problem. I tried swapping my Master/Slave Dev 220s (which form my 440). Same problem. I was about to post a Devialet support ticket and post a note here to @support when, on a whim, I tried swapping the ethernet cable to the Devialet.
That fixed it! All was well again. I did put the “bad” cable back and sure enough, the problem returned. But, but, but… that “bad” cable had been working fine before I started cleaning up AND worked fine afterward for Devialet AIR. In fact, it still works fine between laptop and router. So how can an ethernet cable work fine for Roon AIR to the Devialet and other purposes, but not for Roon RAAT? Can a marginal ethernet cable do this? Why would Roon zero out the Volume Limits?
Anyway, I’m thankful it is all now working and quite willing to throw out my old Cat 6 cable… BUT ,… what happened? Anyone ever see this? @Support - any insight? And, should cables used for RAAT require a higher quality standard?