The double ball is an excellent effect, but you should not run it tt single (pair it with a mushroom, for example). He continues walking. Power level there is no better. I put in a feast of high school, and I filled the room.
Sell: 2 years ago: I had Jamia need to change anything
Pb: it is that difficult to hang heavy (= 10 kg) on a T-foot (sf with two good hook) and it takes up space because the ball is spinning ....
But hey, it is very very good even qd ... they told me!