All that needs to be said is that they are capable of seriously controlled and powerful sound,
The only bad point is finding a set.

I have yet to find a better speaker, possesses a remarkable combination of sheer explosive power and seemingly unlimited dynamics with a sublime delicacy, refinement, and subtlety. This is a speaker that “disappears” in the sense that its presentation—from the size and power of the climax of a symphony’s fourth movement to an intimate guitar and vocal performance—is determined purely by the recording.

Rare if you have a pair keep them as you will need a 5k set of speakers to match thease ultra rare high end speakers expect to pay £900-£1200 for a set.