No ereader besides Kindles and Android ereaders will work with Amazon ebooks as they are. You'll need to remove the DRM and convert for any other ereader.
You can install the Kindle app on an Android ereader, e.g. Boyue and Onyx. But the reading experience is not as good as on a default interface, because the app is not optimized for eink. Still, it's an option, if you absolutely don't want to mess with de-DRMing and converting.
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