jbl charge4

So, since some time my JBL Charge 4 is playing really low quality sound and i mean REALLY with music i tried everything factory reset changing it to low frequency mode but nothing worked rebooting the jbl does work but only for a few seconds then its just low quality again, any advices on how to...

I am planning to buy a Bluetooth speaker mainly for watching videos.( 0 latency). I have found out JBL charge 4 has latency issues. I have narrowed down to Sony xb12 and sony XB 32. My priority is sound clarity and bass. Between two xb12 speakers vs a single Xb 32, which is better. I will be...