Something You Need to Know It is important to note there is an adjustment period when wearing new devices, and it takes time to get used to new PSAP, even if you’ ve worn some type of hearing aids for many years. If you are a newcomer, PSAP may even feel a bit odd at first on/in your ears, At the same time, give yourself time, your brain is just getting reacquainted with these sounds. What Cause the Whistle? Whistling may occur if the hearing instrument is turned on,but not securely seated in your ear.this is normal.the whistling will stop once the device is properly seated in your ear.other caused include a blockage of wax.or damaged ear piece or tubing,or excessive volume.Please take appropriate measures to stop the whistling. Whistling is common for small amplifiers and is known as "Feedback".it is caused by amplified sound from the hearing aid getting back to the micropphone and being re-amplified.The folloring tips will help reduce the occurrence of feedback whistle Help with Whistling 1.Reduce the volume. Turn off or lower the volume before inserting the instrument in your ear. 2.Securely position the instrument into your ear. Once the hearing aid is properly seated in your ear,the whistling will generally stop. 3.Clear the ear canal of wax or debris. Check your ear with help. 4.Change the ear piece or tubing Change a new one or a different size one. Make sure the tubing is not broken or torn. One-On-One Conversations You'll be able to carry conversations without having to strain or constantly ask the other person to repeat themselves. Muffled voices will become crystal clear. Watching TV You'll be able to lower the volume by at least half and even say goodbye to subtitles for good! Music, voices & more will sound clear without any feedback. Group Conversations Even with multiple voices & tones, you'll be able to enjoy crystal clear conversations with your friends & family. On The Phone Even digital voices and sounds such as phone calls will be easy for you to understand & hear clearly.