Yes I suggested it without knowing your whole signal chain at that point.
If I were you I would check the ADI-2 Pro and try to find out whether it is possible to fully replace your current DAC with it.
I am running the ADI-2 Pro in front of Accuphase E-600 and B&W 803.
Compared the 1st version of ADI-2 Pro (years ago) with the Accu DAC-40 module.
The DAC-40 module sounded a little like ADI-2 Pro in “NOS” mode (D/A converter setting).
For me, the sound quality of the ADI-2 Pro was superb and the ADI-2 Pro also have me more options and quality in terms of better quality when listening at lower volumes due to auto ref level.
In your case, you could also add attenuators, to be able to keep the volume setting at the DAC a bit higher.
As a side note … IMHO, a DAC should not have a sound, it should be a device which does an accurate D/A conversion.
With the ADI-2 DAC / Pro, you get well-designed studio devices.
So … In this regard, the ADI-2 DAC / Pro can't really fail … The final sound is being determined / dominated by speaker, room, amp.
I think you should keep the signal chain as short as possible after the 1st D/A conversion. Ideally, you use the ADI-2 Pro for that purpose. I would give it simply a try and then decide.
Yes, you can't make a good blind test with fast switching, but maybe this is sufficient for you.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win11Pro22H2, Cub12