I'm pretty sure the hum will show up at 8 db louder.
If the hum got quieter as you turned the volume down I would say there would be no issue. But if it's there with the volume turned down, that's will be an issue.
If the hum got quieter as you turned the volume down I would say there would be no issue. But if it's there with the volume turned down, that's will be an issue.