I wouldn't be using a power hammer without ear defenders let alone trying to play music over the top of it. As a budget version, I use ear buds under my ear defenders when I use the big angle grinder.Sounds like you need blue tooth ear defenders, no speakers are going to drown out the noise of a power hammer without seriously damaging you hearing.
https://isotunes.co.uk/products/iso...MI0ojv3fjw7AIVSOztCh2y5wXQEAQYASABEgKEJfD_BwE
Parm can knock you up a pair!
A matching stack, for proper stereo ?what about the other side?