DAP for Amazon Kindle and Audible

Whats the cheapest DAP that can also do Amazon Kindle and Audible?

Any of the full Android ones like Hiby R5 or 6, or iBasso 160/220 should be able to. The R5 is $299 and has good power and balanced 4.4, and is the only one I’ve heard. The processor isn’t the snappiest and can end up being slightly laggy at times, but overall I really like it for anything from Shuoer Tapes to Ether CXs.