You may experience some whistling, beeping or rustling noises when using your heading aid. The main causes are:  The silicone tubing is obstructed. If obstructed, the tube is unable to transmit sounds properly and this can produce an annoying whistling noises.  The adjustments are incorrect. A whistle, in fact, can also be caused by inappropriate adjustment of the hearing aid.  Occluded auditory conduit. A whistling noise can arise from other causes that cannot be attributed to the hearing aid itself. For example, a plug of earwax occluding the ear canal may be the cause of the whistling. Whistling should not be tolerated or ignored, but eliminated. For this, do not hesitate to contact your nearest Amplifon center for assistance from our professionals.