I ordered Focal Aria 936

The 936's have impedance peaks of 2.8 to 13 ohm and phase angles from +45 to -47 degrees; they're a bit brutal on an amp, but my 40 year old restored Marantz 2252 has no trouble casting a wide, deep, focused soundstage through them at volumes loud enough to feel in my chair. I wouldn't change a thing about them. They're going to sound even better when I get this class A Pass power behind them. 

Enjoy!  Unbelievably good speakers.

Let us know how you like them!

I know it's now been a few months...how do the 936s sound with the A21? Any issues with the low impedance?