Basically Medeli is supplying Kurzweil and Roland with Casings from their M and MC range of keyboards.

The Roland E-X20 is a Medeli M331, the Kurzweil KP300x is a Medeli MC-710. There are other examples of this stuff, and the list goes on and on, starting in the 90s with FM soundchips in Chinese toy keyboards. Even going as far as putting one or two of the Roland/Kurzweil sounds/styles in there that people recognize but apart from that it's all blatant copies of Yamaha soundsets.

Listen to the Medeli A1000, great keyboard for the price but those drums are Yamaha drums. Those voices are Yamaha voices (some are sweet voices, others XG)

I've put a video here in which i talk more about it and put some pictures up for comparison.

Do you have an opinion about this? What do you think could be their thought behind this?