Really hard to rate this product fairly. It?s very expensive and the method of attaching it to the frame seems a bit amateur, as if the knee rest was an afterthought: three screws that grip only the edge of one end of the knee rest rather than go firmly through it. Seems okay so far but can?t help feeling that a modest bump in the wrong direction and it will simply fall off. Take a screwdriver to the gig!
That said, if you play sitting down you will have to buy this accessory as there?s no comfortable way of supporting the SLB 200 without it. So in that sense it?s brilliant!