I don't know about speakers but I personally prefer IEMs that sound expansive rather than intimate, which is probably where the comparison comes from.Perhaps because the Tiger @Vitaly2017 is on the road most of the time that it would be impossible to carry around a set of home audio system with him?
I've heard the Fourte described as 'speaker sounding, and while I don't quite agree, they are the most expansive and 'open' IEMs I've heard, rivalling the space of the HD800 even though physically they shouldn't have any right to do so. This has numerous advantages, including fatigue-free listening despite the ultra-clear, brighter-tilted signature, and an airiness and physicality to the bass (and instrument decay in general) that's comparable (though not physically equivalent) to how you'd hear a subwoofer and speakers in an open room.