This little speaker puts out a TON of sound for its ridiculously small size. You have to see it to appreciate how small and light (16lbs.!) this thing is. I am using it with a Little Mark II head @250 watts. I've also tried TWO of them with that head, and I then get 500 watts out of the pair. I would HIGHLY recommend this speaker for bass players who hate schemping big, heavy gear, but who still want a great tone. Low end is surprisingly good, and of course, the price was terrific.