A pro invests in an arranger lets say for $2000.00+ or whatever.....then for that measly investment will make 50x or more then that in a year of gigs.....& repeat year after year...then when something goes wrong they complain about the KB when most likely it was human error......if you dumped it in the garbage and bought another you would still be miles ahead of the game....Warranty?...give me a break!!