And it didn't work that well in the reference system until changes in preamp, cabling and power conditioning were made. I think the reviewer respected the amp, but didn't love it.
You want the TRUTH from those Wilson Alexia's, maybe you can't handle the TRUTH
56 bi-polar outputs, current till the cows come home, massive supply, multiple small power supply caps for fast release, 2000w into 2ohms that’s 2hp!!!!!
http://www.stereophile.com/content/sae-2hp-d-power-amplifier#DY4MYZKcUUSS8LeR.97
Cheers George