I own 2.4's. The only real issue I have is the "kick drum range". It doesn't do that super well like it does the rest of the range. I have them paired with it an REL sub. Which fills out the lower range well but doesn't really give you the "thwack" of the kick drum.
Other than that, to make them work you need high current amps and good sources. To that end I have a VPI Prime with Parasonnd JC3+ and Dynavector 20x2 lo mc cart going to a BAT pre and Parasound A21 amp.
The speakers are transparent with air, and 3D as well.