Phantom's Toslink is not ready for live musical instruments

[ogs]

Unfortuntely no, the 'fix' for Phantom is actually to use delay to have the speaker appear as a point source. The best walk-through I've come across is this YouTube video: https://www.youtube.com/watch?v=peQq6BX6jio

[...] It is possible to achieve close to zero lag with amplitude-only correction, but this sort of defeats the main purpose of the speaker; playback of pre recorded music. [...]

Thanks a lot for this interesting insight! Unfortunately, I don't see myself using a delay for my fingers triggering the keys to make the speaker appear on time.

However, your remark on amplitude-only correction sounds interesting.  Would it then be possible to implement this as a sort of "direct in" switch for the toslink port in the Spark software ?

Delayed fingers... that's a thought!
Considering the fact that Devialet has a rather long list of unfixed issues related to both Phantom and Expert I doubt your idea of a "direct in" would have a chance. The only way to find out is to ask them directly...

EDIT sorry, I see from your first post you have already contacted Devialet about this..