I had higher expectations for these, they are not bad, don't take me wrong, but I had higher expectations.
I would say that I have pretty controlled acoustic in my home studio, and understand sound measurements pretty well, but I couldn't make these 4's sound as I wanted... I mean, you choose Adams first and fourth most for the middle and high range, so don't expect so much low end in these.
The new calibration system is pretty easy, but the volume nub is made super cheap.
I end up sending them back!