No, I do like the AK240 SQ, although it sounded a little bright for my taste (no EQ active, BTW)
I was listening with LCD3s and MG6 Pros.
Nice spacious, and quite solid, sound, but it didn't convince me it was worth $2400+. SQ-wise, I don't feel it's a game-changer.
Good, but not a game-changer.
I fully expect the Calyx-M to at least equal the AK240 SQ, but we'll just have to wait and see. Also, bear in mind that the Calyx team will have an AK240 to listen to, and they know they're competing with it, so they'll obviously have tuned the Calyx-M to compete well with it.