I'll have to look up the boost.
I bought the Soundcore Pro+
Listening wired to lossless files on an iBasso DX90 that has dual-sabre DACs. the player tends to be a tad on the bright side.
really happy it doesn't have phony boomy bass. that is the worst.
only thing missing is the highs do not have the sparkle I like. just a tad rolled off in the highs.
of course this is all subjective and everyone has different taste/ears.
It's also less than $100.
honestly, for background music or to improve TV speakers it will work well for most.
I think the metal grille with such small holes blocks a lot of the high frequency energy.
overall, will work for my friends out of the country to improve the TV speakers that are not usable.
needs more highs!