The gn 2100 telecoil is the state of the art professional headset for hearing aid wearers it is equipped with a hearing aid compatible telecoil suitable for all standard telecoil equipped hearing aids and fitted to the plain side of the earpiece the telecoil cancels out surrounding background noise and heightens the sound quality from the telephone for clearer crisper phone conversations telecoil equipped headset for those with special hearing needs filters out unwanted background