Hi
How does this functionality work?
When I scan UPnP Render I see My Yamaha R-N803D device. This option is for connecting Roon server to receiver?
It is a Squeezelite to UPNP bridge, it should be discovered by Roon in Squeezelite mode, follow this guide
Wow it’s working. This communcation is only PCM ? My amplituner has only 192 khz PCM but with DLNA support DSD128. Squeezebox support DSD?
Not in this implementation … afaik … on LMS/Daphile UPNP bridge plugin it does but you need to add dsf/dff to the enabled file types list, by default it doesn’t
No as Official squeezebox hardware never did it could work via DoP but wasn’t officially supported and Roon only officially supports those and not the software emulator Squeezelite . It works with Squeezelite but with these caveats.
There is also a second UPnP/DLNA tab in RoPieee, does it require a USB cable for its operation or does it work similarly to UPnP/Bridge. What is this second option for?
UPNP/DLNA is to use a UPNP mediaserver (like Minimserver) and a UPNP control app on smartphone/tablet (Bubbleupnp, MConnect, Lumïn, Linn ….) as complete playback system, RoPieee acts as a UPNP renderer.
This scenario is an alternative to Roon
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@Stefano_Antonelli @Simon_Arnold3
Thank You for Information 
I was hoping that I would be able to hear DSD files using these two functions, but I see that the maximum I can achieve with my equipment and Roon is 192 kHz. Maybe I will change my Yamaha to the newer R-N1000A model, it has a USB DAC input. I tested on the lower model R-N800A and DSD files work without problems up to DSD256.
@Stefano_Antonelli Last question about quality of the sound RAAT and Squeezebox.
In my case RoPieee support ALSA.
Do you hear the difference between these two protocols?
Sorry Bruno, can’t compare RAAT with anything as I don’t use Roon.
I’m using UPNP as described before: Minimserver → Lumïn app → RoPieee/UPNP&DLNA
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Those are different things. ALSA is the sound layer of the Linux kernel and takes care of the last part in the chain: pushing bytes to a sound device (HAT, USB).
Both RAAT and Squeezebox use ALSA.
The difference between RAAT (Roon) and SlimProto (Squeezebox,Squeezelite) are hugh, most importantly RAAT is younger 
Whether you can here the difference… that’s up to you.
Personally I think the Squeezelite/box/LMS ecosystem is second best after Roon, although its big advantage is that it is fully open source.
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Thank you for the precise explanation @spockfish.
Even if Squuzebox supported DSD it would be perfect for me Why didn’t I discover this earlier, I wouldn’t buy a HAT for my Raspberry Pi
Ok, but this will be work by UPnP Bridge? Right now I connect RP to Router by wire data are pushed to my Yamaha by Bridge
No. Squeezebox is meant to be used in cooperation with LMS (the server side component). In that setup you can use DSD. With the UPnP Bridge you ‘bridge’ Roon to UPnP, by using Roon’s native support of the SlimProto protocol. However, it does not support the protocol extensions that makes it possible to use DSD over SlimProto, these days.
Hi,
I’ve been enjoying both PCM and DSD playback using the UPnP Bridge. However, I have some DSD128 music that I’d like to play. Could you please raise the maximum sample rate to 384 kHz (or even 768 kHz)?
Thank you in advance.