Wireless devices like your headphone system use specific allocated frequency bands. However, other users share these bands as well. Interference from similar or other wireless music devices is always possible.
Some reasons and possible solutions:
- Your neighbor is using a similar wireless music device. Try setting a different channel on your headphone set (see user manual)
- Your (automatic) tuning system in the headphone is currently tuned to the neighbor’s signal. You can both be on different frequency channels, but you need to tune to your own transmitter. See user manual for the tuning procedure
- Tip: tune both devices in close proximity