Sharp. I bought a new maul about 3 or 4 years ago to replace the double bit ax, thought I made a mistake until I worked it over with a grinder and file. Learned also that 'wood splitting wedges' from tractor supply don't split wood very well. Got some wedges that are way longer with much less of a taper and never looked back. The ones I use are about 12" long and about 3" thick at the back. By the time it's buried then grab the other one that starts out at 2" and widens to about 5". If I still need more it goes in the bonfire pile.
Now I have a splitter, the maul leans against the wall forgotten, cold, and un-loved.