Apologies for being somewhat mysterious about the specific 3rd party software, but this is for the good of the company itself. This is because they offer a software solution that requires the Mac, in addition they offer a plug and play hardware solution whose price is 5x higher.
With the above reason I wanted to send you a pm, but your account is public hidden. Hence, I also approach you here in another topic. Is there a way I can send you a pm? 
Than Im happy to mention the 3rd party software name + this thread stays proper.
I haven’t purchased HQP yet because I want to map out my route first. I was first considering a high-quality ddc with masterclock in conjunction with the Mac. But I prefer to send the output sound of the 3rd party software via a method to a dedicated streamer or audiophile PC over the ethernet as endpoint which is connected to my dac.
(Btw I already have one Rpi which now functions as a Diretta endpoint).
I have an Audio Note Dac3.1x/II that is limited to Spdif coax and Aes/ebu. Would I go for HQP or a DDC reclocking unit it gives double benefits since my dac does not use any kind of filtering, upsampling or shaping.
I wonder if for convenience I can’t choose the Rpi as the output device on the Mac? (To date, I don’t have a Mac yet, otherwise I would have already tried this option).