Hearing aids are complex technological products. Such a small piece of technology and yet so many variables. Within a hearing aid there are several functionalities e.g., diverse audio algorithms/ features, rationales, user programs, vent sizes, receiver response/ power, complex fittings, different physical hearing aid styles and more. As if that were not complicated enough, the hearing world and its infinite hearing situations are a complete sonic maze – being the cocktail party effect the minotaur you would rather avoid contact with (but in the end you must face it anyway). In one way or another, all these variables contribute to the user experience, the sound, and the daily experience of living with hearing aids in the ears throughout the entire day. Ecological momentary assessments are often used to evaluate hearing aids in real life. There are different approaches to using EMAs to study how users experience and tweak their hearing aid. In this webinar we will explore 3 EMA studies conducted by Aalborg University, Eriksholm Research Center and WSAudiology.