Audio from Roon Core but not from either of two Zenith streamers

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I currently own two Zenith music streamers, both of which are located in my house, that are never connected to the network at the same time. My Nuprime IDA-8 DAC just came back from the dealer, who said he could find nothing amiss. Both my POLK floor speakers have audio (hiss) when connected to a standalone stereo receiver. The issue that has me stumped is that when I connect either streamer to Roon and click on a music file, audio comes from my Macbook Air (Roon Core), but not from either of my two streamers after clicking on the IDA-8 icon in Roon (lower right hand corner of the screen). Can anyone offer a solution?
 
I'm not sure, but this sounds like more of a Roon issue if it is running on the Mac and that is where the audio is outputting from. Probably the audio configuration might need updating. The DAC will not be the problem. You'll most likely get more feedback on the Roon support forums, so do make sure to post your issue there if you have not already done so.
 
I completed Roon's No Audio troubleshooting chacklist on my Zen a few days ago. Since I was unable to resolve the issue, Roon support instructed me to contact the device manufacturer, i.e., Innuos. A simple explanation seems to defy logic because on some days in a given week the audio icon appears immediately on boot-up, whereas a few days later the No Audio issue returns, despite NO changes whatsoever to my system: Roon Core (MacBook Air), DAC (NuPrime), LAN connection from Zen to DAC. FWIW, selecting iPhone as the Roon Core using Innuos Sense did not present a problem .
 
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I completed Roon's No Audio troubleshooting chacklist on my Zen a few days ago. Since I was unable to resolve the issue, Roon support instructed me to contact the device manufacturer, i.e., Innuos. A simple explanation seems to defy logic because on some days in a given week the audio icon appears immediately on boot-up, whereas a few days later the No Audio issue returns, despite NO changes whatsoever to my system: Roon Core (MacBook Air), DAC (NuPrime), LAN connection from Zen to DAC. FWIW, selecting iPhone as the Roon Core using Innuos Sense did not present a problem .
I'm getting quite muddled; i thought you had two ZENith Mk3s, but you mention a Zen II? Also, iPhones cannot be Roon Cores. Also, the LAN connection from an Innuos to a DAC is not an actual output - the USB is. So what device is the NuPrime connected to by USB, or is the NuPrime actually a network Roon endpoint?
I do strongly recommend you get a good dealer come in and streamline the setup for you.
 
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I meant to say the device is a Zen Mk.3. I've suspended use of my older Zenith to avoid confounding until this audio issue is solved.

The NuPrime is connected to the LAN port of the Zen Mk.3 using a USB cable.

BTW, it appears from scanning several Roon chat room conversations that the No Audio issue is not unique to my system.
 
Tuesday at 5:58 AM: "I do strongly recommend you get a good dealer come in and streamline the setup for you."

Using their Backup feature, I made separate copies of my HD in Innuos and in Roon before a local technician re-assigned the Roon Core from my laptop to my Zen Mk 3. However, each album in my collection now shows duplicate copies.

Reinstalling one of the backups seems a quick solution, but I'm wondering whether to use the Innuos version or Roon version?
 
Tuesday at 5:58 AM: "I do strongly recommend you get a good dealer come in and streamline the setup for you."

Using their Backup feature, I made separate copies of my HD in Innuos and in Roon before a local technician re-assigned the Roon Core from my laptop to my Zen Mk 3. However, each album in my collection now shows duplicate copies.

Reinstalling one of the backups seems a quick solution, but I'm wondering whether to use the Innuos version or Roon version?
They are absolutely identical - in fact Roon, does not backup music files, usually. Just its database info (playlists etc). The innuOS backup does actually backup all the music files.
You only need one set - might as well use the Innuos one.
 
After working flawlessly all day, I am suddenly unable to connect to Roon Core (= Zen Mk 3) via LAN cable, although I can still connect to Roon Core (= Laptop) via LAN cable. This problem started around 5 pm after a <100 msec loss of power at our house (note: the unit was connected via an all-in-one, multi-plug circuit breaker). Of unknown relevance and origin: numerous, small (<0.5 mm) fragments of glass are present underneath the Zen Mk 3 / on top of the glass shelf upon which the Zen rests.
 
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