Concerning studio monitors for any DP, please just try Edifier monitors, this is just an example,
but they all have very high sound quality for the price you pay:
https://www.edifier.com/int/en/speakers/studio-1280t-2.0-powered-bookshelf
I use a pair of the R1280T with my Px-5S and they are amazing for the price. Very clear and true sound,
just like the sound I get through my Samson SR850 refrence studio headphones.