That amp is based on the ancient JXP series. Later on it was remade to the AXP series. Then remade to this specific line, the XA. The JXP series would do close enough to their rated power that the difference wasn't audible. I know, because I own a JXP460. It is as tough and ugly as hell. =) Basically I'm saying it still has the dual crossovers, which means it could still has the same not-so-overrated board.
If it were 30X2@4, I'd be all over it. Free bump.