Right. So, I bought the ER3XR after people kept creaming their pants when talking about Etyimotics and their IEMs. They keep getting referred as 'flat' and 'neutral'. I'm not massively knowledgeable about how the inner ear works, but my understanding is that a flat frequency response does not sound flat to you inner ear, so actual sound reproduction needs to be done with a totally not flat response in order to sound flat. Problem is, how do we know it's flat? My ER3XR sounds very mid forward, but not artificial. However, I don't know if it actually sounds natural or it's just my ear perceiving this. Can anyone shed some light into what an actual neutral/flat/pancake IEM sounds like? Do I perceive the ER3 as mid forward just because all other headphones/IEM are have recessed mids?