It was explained quite a lot in the early announcements, that you need an 818 or other qualified item to decode/confirm the data. So I don't think USB/SPDIF converter into SE speaker has a hope in hell of working.
Sorry!
I was assuming that Tidal/Roon would provide the decode/confirm.
Agreed. The DSPs are not going to do the decoding and will need an MHR stream to work with MQA.
But surely the DSPs (since they contain a DAC) must do the rendering? And surely we are not suggesting that they could only handle MQA material from an MHR-capable source, that would seem like quite a limitation, especially given the (current) very limited availability of such sources.