To add something to AJ's statement, it would be nice if you could just keep adding to an existing keyboard all the things you wish for, but in reality, because of the limitations of the main proccessing board, this is not usually possible (Am I right to this point AJ?) Sometimes you can change a few things with operating system updates, but the main microprocessor is the heart of the keyboard and a new one is develeoped each time a new keyboard comes out on the market, unless the company uses the same processor in some new model name. This would be the case of the X1, SD1, XD9. Am I correct AJ?
George Kaye
Kaye's Music Scene