It's the low end brand from Felder (who also have Format4 as their high end brand). Don't own any personally, but have looked at it when buying a tablesaw, jointer, and bandsaw. Always seemed pretty nice but its very expensive new. I wouldn't hesitate to get one used if its the right size for what you're looking for. Seems like most of the stuff is a bit smaller (as the bigger stuff is branded Felder) than what I'd really want.
For the tablesaw, I decided I didn't want a slider, so I got a sawstop. For the $4k for a jointer just seemed like too much, plus it had a pretty short table and I don't like the Eurostyle guard. For the bandsaw I ended up getting an old Northfield bandsaw instead, which is wonderful.
I have two felder sliders, they are very good machines. I used a big old Martin for a year and it got me hooked, but Martin is the priciest. I can’t imagine the Hammer line is deliberately lesser quality, probably simpler functions. I’d say more than decent stuff.