They're very divisive speakers at a number of sites due to their comparatively poor measured performance, but it's pretty decent for a crossoverless design. IIRC, the main driver is run wide open and the supertweeter has a highpass cap crossover.
I, for one, love them. Their sensitivity is appropriate for a SET amp, and their impedance may be, but I can't vouch for how stable they are.
$1600 isn't an amazing price, and they come up on A'gon for less, but if your pair is local it's probably worth it not to have to deal with shipping them.