Out of box these sounded great in my opinion. Although you can use the soundcore app to adjust the sound as per your taste.
Soundcore Model Zero - Z5180 "Review"
I think if they changed the adapter design, the Model Zero would get considerably bigger.
I like it way it is or if they provide a USB-C adapter to handle power.
USB-C for input was my first preference if not, add the direct power connector
Help me get away from the power brick dedicated only to the speaker
Ok, I help you
USB-C everything…