Why howling
If there is a gap between the earbuds and the earholes, the microphone and earbuds will interfere, and in this case a beeping sound will be heard. For example, if the microphone and speaker are too close on the KTV, the same beep sounds.
How to solve howling
1. Check the size of the earplugs when wearing them . Choose the earbuds that best fit your ear. Insert the earplug firmly into the ear hole to ensure there is no gap.
2. Before wearing, please turn off the power and reduce the volume.
3. After wearing, turn on the power, gradually increase the volume from the minimum, and adjust until you can't hear it.