i have been told that the PS100 is HDMI-ARC - which will not work in the way you have suggested
You are correct - my apologies. I have been a bit confused about "ARC" versus "non-ARC" but I just did some Googling now.
OK, in my post #4 ignore 2b) - that's wrong.
But 2a) is still correct - all you should need is a standard HDMI extractor, then feed its coaxial S/PDIF output to a DAC - the entry-level champion is presently the SMSL PS200 PRO.
This runs counter to what i have been told elsewhere: Specifically, i have read that a standard HDMI Extractor will not handshake properly with the SONY BDP - and will cause it to downsample the SACD to roughly CD Quality (16bit 44k) as opposed to 24 bit higher quality PCM.
I think the information you have been told relates to accessing
DSD-over-HDMI, not PCM. Yes, if you try to send DSD-over-HDMI to a non-Sony authorised HDMI device (such as a standard HDMI extractor) the SACD player will refuse to do so, and revert to PCM - I'm not sure if that will be PCM transcoded from the SACD layer, or simply the standard CD layer.
The core issue is that Sony considers their precious DSD format to be highly valuable, and they place tight restrictions on how it can be accessed.
But if you configure your SACD player to output PCM, I don't believe Sony has any problem with this. Having said that, the actual PCM sample rate of the transcoded DSD is vendor-set - my Pioneer BDP-150 outputs PCM at 96kHz, both via HDMI and coaxial S/PDIF - but maybe Sony has set yours at 44.1kHz?
As we explore this issue it makes me realise that if all you want is PCM, just get it from the S/PDIF output of your SACD player - there's no need to access it from the HDMI output, and no need for an HDMI extractor at all!
And if your Sony's PCM output (either HDMI or S/PDIF) is fixed at 44.1kHz I would not lose sleep over this. As I mentioned earlier, you're now dealing with
transcoded DSD. It will be little better at 96kHz than it will be at 44.1kHz, if at all.
In fact, if you're not accessing the original DSD data, I would not bother transcoding at all, and simply use the standard CD layer of the SACD - that can be configured in the menu.
Now let's return to the issue of true DSD playback.
Aside from the other things, you mentioned the DOP - i have been receiving mixed messages everywhere on this. Such that, some extractors like the one in audiophonics
Specifically, the warning has been that unless it explicitly mentions 'DoP' in the product description, it cannot be counted on.
Yes there's some uncertainty around this issue - I have been dealing with DSD output from an SACD player for the last 10 years or so, and I have always advised people to use the I2S output of the HDMI de-embedder, which then necessitates a more expensive DAC (or DIY DAC).
But in the last year or so several users have reported to me that this particular HDMI de-embedder definitely outputs DoP on its coaxial S/PDIF connector. I can't guarantee this, myself, but it seems to me there's only
one core version of this HDMI de-embedder, even though it's sold by many different outlets, and is sometimes even rebranded.
It's your choice, but I think it's worth a gamble - connect its coaxial S/PDIF output to an SMSL PS200 PRO, and see if the "DSD" light appears. If not, you have lost 85 Euros, not 1000 Euros.