Hello, Bad Guy! bought the Tripowin Olina IEM and the right side sounds lower in volume than the left. What I can do?. Help, please.
They just arrived 
Try changing the filter. It’s a common issue with the filters wherw condensation builds up in them and lowers the volume
It’s likely what @cal_lando mentioned, but to troubleshoot: is it the same if you switch the cable connections (i.e. left on right bud, right on left bud)? Does it go away if you let them sit unused for an hour or several hours? Were they like that out of the box, or only after continual use?