Leezone only what I konw befor purchasing is fact:Audya is stell in Beta wersion and Ketron ingeners working on new OS-call them OS4.I know also Audya can frize,Audya cant recognize USB kay and Audya may haw many bugs. Like I say befor:I belive in Ketron cos instrument with that price must haw what haw the Bigest ones and sequencer is in that list.