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Have you looked at fiio? They’ve been doing it a while and aren’t crazy expensive https://www.fiio.com/player

These actually look decent, thanks for the link. I wonder why I could never find them in my endless googling

There's other competitors as well. Just search for "DAP" (digital audio player)

Or buy any old but decent condition LG V series phone (like a V20, v50 etc etc)

Fiio, Hiby, basically any chifi music player is a soc+android.