I think you’re right about Sonoma, Rat. I thought for some reason that they had somehow designed and integrated an EQ that could work with native DSD into the program at some point, but I don’t see anything like that looking at their product pages.
Just looking at product sheets, it looks like Sonoma and the free Tascam DSD editing software do native pure dsd editing. And Pyramix can do native pure with dxd pcm inserts (?) where processing is needed (?). Not sure I’ve got that right though.
Sound Forge and Soundit Pro do “DXD” (PCM) only as far as I can tell. (Convert from DSD to very high rate PCM, 352.8k and up, edit, process, fades, plugins in PCM, and then convert back to DSD for final output).
Seems like Wavelab could do this if DSD conversion/input/output and higher rate 768k PCM was added. Still a certain amount of work, but doesn’t seem like as much work if all the PCM functions are already there. Free programs like Foobar (win) and XLD (mac) already do DSD / PCM file conversions, so it’s not like it’s not a fairly common thing.
I’m open to corrections. I have very limited experience with DSD (Korg and Tascam software, Tascam DA3000), and just relaying what I’ve read about the others.
p.s. I’m pretty sure I got at least some plugins to work with 384k pcm in Wavelab when I tried it, if that’s a consideration. Maybe many plugins work at the very high rates, really not sure.