I do consider single mastering as true mastering. I just don't see those systems as being optimized for it (yet)

A significant part of my work is album sequencing, for physical media still. Vinyl sales are still very much a thing. Mastering is being marketed as bus processing, but that is only a fraction of the actual job. Artists typically release a series of singles and then an EP/Album as a physical release

I wouldn't call only being capable of a fraction of the job optimization.

The constraints that made it sound good in the first place.

Reaper 7 + Windows 11.
I'll fiddle around and try to repeat it. Cheers!

Amazing! There's definitely something subtly pleasing happening on the analogue and aggressive analogue modes. Nice job.

Only minor problem I've had is a couple of times (with a good amount of headroom) if I quickly move the low shelf, even just from 1 to -1 my sound card detects DC and mutes.

Sontec, on most masters that go out the door here. it's lovely, and the opamps don't break (unless you modelled that)

I followed you back, sorry!
Also using one of your plugins right now.