I totally forgot to reply, something with Holidays.
@markanini I bought the Truthear x Crinacle Zero: BLUE - In-Ear Monitors - IEM
My current organ is a Johannus Vivaldi 350, the components are in house made by the producer itself. I have no way to check the influence and quality of these components. Swapping them is out of the question since they are integrated into the hardware of the organ.
Next year I plan to switch to a hauptwerk setup with a RME UCS II. That will give me more control over the whole audio chain.
I did tune the organ myself regarding treble and bass for every individual stop plus the volume per key, so the sound itself in basis should be quite balanced towards my preferences.