Designed to “disappear”, the main part of an MIC hearing aid hides in your ear canal. This piece is custom-manufactured based on an ear canal impression taken during your visit, so it's very comfortable. The hearing aid microphone is a separate component, and is worn within the concha, or curved groove, of your external ear—where it stays out of sight. A tiny transparent tube sends sound from the microphone in your concha to the component in your ear canal.