If I understood it correctly you're asking if it's possible to connect the optical cable directly into the Phantom itself, instead of in the dialog.
To give an anwser, yes it's possible, I did it myself. You can just plug an optical cable in one Phantom and set it in the spark settings app.
To give an anwser, yes it's possible, I did it myself. You can just plug an optical cable in one Phantom and set it in the spark settings app.