These AI instructions worked for me.
Phase 1: Enable Network Discovery on your PC
For the Qobuz app to "see" your LUMIN, your Windows network settings must be set to allow device discovery.
* Click the Start Menu and type "Network Status."
* Ensure your connection is set to Private (not Public).
* Go to Advanced sharing settings and ensure "Turn on network discovery" is selected.
Phase 2: Configure the LUMIN U2 Mini
You need to make sure the U2 Mini is ready to accept a stream from an external app.
* Open the LUMIN App (usually on your phone or tablet).
* Go to Settings > LUMIN Selection > U2 Mini.
* Scroll down to the "Options" or "Streaming Services" section.
* Ensure "LUMIN Streaming" or "UPnP/DLNA" is toggled to ON. (In most recent firmware, this is on by default).
Phase 3: Setting up the Qobuz Desktop App
Now, let’s link the two via your PC.
* Launch the Qobuz Desktop App on your PC.
* Look at the bottom right corner of the app window—next to the volume slider, you will see an Audio Output icon (it looks like a small speaker).
* Click that icon to open the "Audio Output" menu.
* You will see two sections: "Direct Sound / WASAPI" (your PC speakers) and "Network Devices."
* Under Network Devices, select your LUMIN U2 Mini.
> Note: If you see two options for the LUMIN (e.g., "LUMIN U2 Mini" and "LUMIN U2 Mini [Multi-room]"), always select the standard version for the best stability and sample rate support.
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Phase 4: Optimizing for High-Res
Since the U2 Mini is a high-end transport, you want to ensure the PC isn't "bottlenecking" the quality.
* In the Qobuz app, go to Settings > Streaming.
* Under Quality, ensure it is set to Hi-Res - Up to 24-Bit / 192 kHz (or higher, depending on your DAC's capabilities).
* Because you are using the network (UPnP), the U2 Mini will now pull the file directly from the Qobuz servers, bypassing your PC's internal sound card for bit-perfect playback.
Troubleshooting "Missing Device"
If the LUMIN doesn't appear in the Qobuz output list:
* The "Same Network" Rule: Ensure your PC is on the same subnet as the LUMIN. If your PC is on a "Guest" Wi-Fi and the LUMIN is plugged into the router, they won't see each other.
* Restart the App: The Qobuz desktop app sometimes needs a "refresh" to scan the network. Close the app completely and re-open it.
* Firewall: Ensure Qobuz.exe is allowed through your Windows Defender Fire wall.

