In my case, it is speaker placement (aka room acoustics). And only so. Whether it is a low budget (active) pair of loudspeaker or a more expensive one: Only when I considered all aspects of the influence of a room, I could make the ’disapearing act’ become reality. The recording itself does not seem to have a (big) influence. Up to now, it ’happens’ with every tune since I did the speaker placement correctly.
After meticulous work with loudspeaker placement and the room(s). Funny thing, I did not have to spend (or invest) 1 cent into room correction.
Unfortunately, it took me too long to understand the importance of the room. Because I did not pay enough attention to this fact. Tutorials by Dennis Foley from Acoustic Fields helped me to get it right.