Dan D'Agostino Is Making 'Big Iron' Again - 800 wpc Monoblocks

I would like to know what operation class this amp is? , the site has no mention of it,  however,  I suppose I could give Dan a phone call,  been awhile since we last talked. 

Hi infection,  I have known Dan since the krell days, Dan also talked to me about my current amplifier,  the modified krell 700cx before I had krell do the modification's at their factory,  which consist's of improved transistors,  capacitors,  and tweaked power supply,  the only one in the world,  according to what krell told me. 

I called Dan,  he was at ces, so Alexander sent me this email yesterday,                                                    HI Keith, 
The Progression Monos are $45,000 a pair. 
A Progression Stereo is a future project. Hasn't been started yet. 
-Alexander J Wilde