So since my Lumin T2 has only one usb input (hint....weak link) which I use from the i7 silent computer with a rather pricey Shunyata cable to stream Tidal and Qobuz via Roon. I now have to buy a cheap usb hub to share the pathway in order to use a remote control? I think I'll pass at this time.
If you use Roon on a NAS
You can buy a Logitech Harmony remote and install Deepharmony on your NAS to make your remote control Roon and then control your Lumin
And you can use that same remote to control in the same time, the streamer, the amplifier, the TV
And with this, of course, no need for this USB ugly receiver, Deepharmony works over the wifi with Roon
No need to buy this 300USD remote. Specs can be not true with all configurations with Lumin as it is explained here
There is an anomaly of file handling between the Lumin U1 Mini and my DAC - Lumin - Roon Labs Community
and here
Anomaly between my Lumin U1Mini and my DAC
And I would like to add that Lumin is copying Deepharmony process here
With this deepharmony, you can set the numbers on the remote to automatically play playlists and radios (eg press 1 to play Grown Jazz playlist on Tidal)
I think this is what is planned for the numbers on the Lumin remote
And no need for the Leedh volume, your amplifier will do just fine
Anyways this is something that already exists, with a way more capable remote (it can control all your devices at the same time)
All you need is just some geeking and it will work fine