@tomthiel
Some considerations when looking to use a disc spinner as a SACD transport:
The PS Audio solution is pretty much limited to coupling their Perfectwave Transport to one of their own DACs via a fairly proprietary I2S connection. It’s an elegant solution, although rather expensive.
I have a friend who has this setup.
Otherwise, the approach I would consider would be to employ the Geerfab D.BOB (Digital Breakout Box) which is a $1000 item that sits between an SACD spinner with HDMI out (like an OPPO) and a DAC supporting DOP (DSD over PCM) via its COAX or Toslink input. The Benchmark DAC3B is a compatible DAC.
Note if connecting a spinner directly to a DAC via COAX or Toslink, you will not be able to access an SACD’s DSD layer (only the CD layer of a hybrid SACD).
An alternative solution, and the one that I employ, is to rip SACDs to my music server, and then use Roon to play them (you could do this with JRiver or some such as well) using a DAC that supports DOP (in my case a Chord Qutest). The ripping process is somewhat involved, so won’t get into that here ... but if interested, can provide guidance.
Hope this helps. Feel free to PM me directly.