Roon does not see devices directly connected to Nucleus

Core Machine (Operating system/System info/Roon build number)

Nucleus OS 1.0 build 175 stable. Roon Server 1.6 build 416 stable Roon Labs 1.0 build 11 stable

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Mostly wired ethernet over Cat 6 cables and two 24 port Ubiquiti Unifi switches, one with POE and the other without.

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

Marantz 8801 Processor into a Marantz power amp, B&W speakers. Input is HDMI from the Nucleus

Two Audioquest Red Dragonflys into a NAD CI940 over USB directly from the Nucleus

Two Hi-Fi berrys, one driving an older AV receiver and the other driving a B&W soundbar. Both running over wired ethernet.

Three Bluesound devices, a Powernode 2i running over wired ethernet, a PulseFlex 2i over wi-fi and a Pulse Mini, also over wi-fi.

Description Of Issue

Roon does not see the endpoints connected directly to the Nucleus server. This would be the Marantz over HDMI and the the two Dragonfly endpoints – over USB-- that input into the NAD.

Roon does see the ethernet connected devices.

Moved this to nucleus support.

Are the usb devices on a hub or direct connected to the USB ports? What dragonfly models are you using?

Roon will probably only see the avr on Hdmi if the unit is on.

Hi @Timothy_Good,

Can you share a screenshot of what you’re seeing when you go to Settings > Audio?

The USB devices are directly connected to the Nucleus. Roon doesn’t see the avr even if it’s on.


Here is a screenshot as of about the time I did the posting.

Thanks for your assistance.



I believe the screenshot Dylan was requesting should look something like this. I was wondering if outputs may be disabled in Settings - Audio.

Thank you George. I think that I now see the problem.



After enabling the devices, things are working again.

Any speculation on how they became “unenabled”?

Thanks again,


It doesn’t seem that my screen shot posted properly so I will try again. After I enabled the devices, things are working again. Thanks for the assistance.

Hi @Timothy_Good,

I can’t say for sure what caused them to be disabled, but thanks for the update here and glad to hear that things are working properly since re-enabling the devices. Hope you have a great day!

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