Hi @Oswald_Jochum. Welcome to the Roon Community.
Airplay is limited to 16/44, which would be the reason for downsampling here. If you want a higher bitrate you need a different communication format.
I’ve found the best way to get Roon to talk to my Devialet Phantom Silver is via a “RoonBridge”. Basically, it sits between your core (your HP Laptop) and the Phantom, via ethernet in my case. The RoonBridge ‘translates’ Roon’s specific communication protocol (RAAT) to give the Phantom the proper digital stream. You can put one of these together pretty inexpensively in about an hour, based on a Raspberry Pi (RPi)microcomputer board.
Here is what I used. Basically it is a RPi board with another board neatly mated on top. It simply plugs onto the RPi board. This gives a SPDIF signal out which plugs into the Phantom. You control the volume either via Roon, or with the Phantom rotary volume control.
Works great! You get the 24 bit signal sent to the Phantom, no downsampling.
I’m going to move this to the Devialet area where more users might see it. They may have different solutions.
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