According to their site, they consume 700 watts together. That's 350 each mono. My previous Lamm 1.2 Reference monos used 320 each and were rated at 110watts.
Audio GD XA150 Monoblocks
Kingwas new pure class A 100 watt amp! Looks impressive
http://www.audio-gd.com/Master/XA150/XA150EN.htm
http://www.audio-gd.com/Master/XA150/XA150EN.htm