FMJ D33.
Just having a serious listen now, and playing with configuration.
So out goes the Dspeaker, at least for the moment, and I had taken out the Wyred4sound remedy too, at the same time. Reintroduced it on coaxial with exacting listening tests to see if it was still doing anything with the change of dac. I'd say its effect is less than with the Young dac.
But a few swaps between wires later pretty obvious treble just slightly creamier without losing any detail, but bass more open, more defined, more slam, more air. It's staying.
The room modes the Dspeaker was adressing seem much less of a problem with the D33. Curious that. So maybe the Dspeaker will be staying out.
Edit... definitely hearing stuff I never heard before on Quadraphenia. And Billie Eilish too...