Is it sealed? I didn't read all of the marketing prose closely, but the front of the unit has what looks like what might be ports:
View attachment 48614
It's frequency response is listed at 30Hz - 160 Hz +/-3db, so OK, assuming that's accurate. Amplifier wattage doesn't really tell us anything since SPL performance is impacted by the impedance and sensitivity of the driver. So maybe it's a good value for a studio sub. Difficult to say without seeing the anechoic response. Could be it's a peaky midbass sub.
And that surprises me that Kali would not provide a measurement chart if it does indeed perform well. Maybe they'll post one later.