I remember back in 2015 when my hearing experience was still low. A friend brought over the Sennheiser IE800 and I listened to it for hours. At that time, it was a lot better than anything I’ve ever heard. And I listened for hours. I knew it was good but I couldn’t understand what made it good or what was good about it, other than that it was "good".
Fast forward to 2026. If I listened to the IE 800 now, I can comment about its soundstage, separation, imaging, tonality, smoothness, transparency. Level of graininess. The list goes on.
Lately, I've been super anal about the dynamic range of music, especially dynamic range of the midrange and the treble.

