I know exactly what you are saying as i did the same with my latest cd transport. Only no sacd play back with mine, but it only cost £499, but it works with the dCS clock.
But keep us informed as you go as interested in how it goes.
May I just add that what some recent products that I have seen have seen ( not necessarily silver dis players) have 10 mHz clock inputs. These cannot be used to synchronise the unit with dCS DACs.
Thank’s @gordlau for posting this, I was researching this transport especially because it has SACD capabilities, so I can use it with my Lina DAC.
Since the Lina Clock only has two clock outputs, the fact that the Onix XST20 doesn’t have a Clock Input is not important for my use case. And it’s more price appropriate
Before this transport exist, I rely on geerfab d.fob with a universal player (in essence a Blu-ray player) for this duty. This Onix transport doing much better job tbh.
And yes DSD output via BNC/AES and SPID/F would be DoP. No DSD output via USB.
Hard to compare in terms of direct comparison (myself anyway)
I did have an oppo bd103 mainly for ripping SACD. I used to extract DSD signal with a geerfab D.BoB, if the oppo serves as a transport. I would say the onix beat that hands down.
Though my main listening would be Roon n files.
I didn’t compare directly in terms of straight PCM though.