Keyboard customers, owners of keyboards 670-775-975, are disgusted with the yamaha do Brasil, for not releasing the Brasilian3 packs and the others that were made for the SX, disregarding the predecessors of the 70 line, which is also from the manufacturer yamaha , which by the way will be very expensive, just like I have the 975, and I’m always updating, I had the sx900 I didn’t adapt, I went back to the 975, see the comments on faceboock social networks. the users' revolt that promises not to use the brand anymore, due to the neglect!