IMHO the cleaner approach would be to get the ADI-2 Pro FS R BE. If you use a quite inexpensive A/D converter at the start of your signal chain, then the quality later can not be enhanced by any other product.
Another advantage for you is, that the optical port stays free for other purposes, like e.g. to connect your TV to the ADI-2 * so that you can enjoy movies with the enhanced audio quality of your ADI-2 * D/A converter and your HiFi. You will be astonished how fabulous audio quality of TV productions (streaming movies, etc) is.
You can even connect a quite inexpensive 4:1 TOSLINK switcher with remote in front of your ADI-2 *, then you can connect
- Bluray Player
digitally to your ADI-2 * and listen in best quality through your HiFi.
A TOSLINK switcher that supports up to 192 kHz and looks also quite nice is this one here:
https://www.oehlbach.com/de/neuheiten/e … l-4-1-mkii
But look to get the Mk II, the older product had the wrong TOSLINKs inside that supported only 96 kHz although the product claimed to support 192 kHz.
Here an example diagram to make it easier to understand what I mean:
X10SRi-F, E5-1650v4, Win10Pro20H2, Cub11Pro, UFX+ (v0.9734), XTC, 12Mic, ADI-2 Pro FS R BE