sonometer, I’ll just post these links for you to look at. Luxman only publishes the power for the class A portion of the amp, which seems a dis-service. I wouldn’t feel comfortable making a blanket statement about the amp and your speakers, although I’m inclined to think it wouldn’t be an issue.
L.
http://www.luxman.com/files/HFN_Luxman%20L-590AXII_lowres.pdf
http://nordaudio.pl/uploads/pdf/luxman/test/20141202-EN-l590ax.pdf
L.
http://www.luxman.com/files/HFN_Luxman%20L-590AXII_lowres.pdf
http://nordaudio.pl/uploads/pdf/luxman/test/20141202-EN-l590ax.pdf