NXEars Opera and Sonata IEMs

I agree completely with you! That’s why, at least for me, I now always look at FR curves before considering buying an IEM or headphone. I MAY NOT LIKE the sound even if the frequency response looks good to me, but so far I have NEVER LIKED the sound of an IEM or headphone that has a frequency response curve I think looks off based on what I do like. This is a lesson I have learned the hard way having purchased many, many headphones and IEMs without first looking at the FR curves…

Frequency response graphs are important for me. I know that I hate most elevated treble curves/peaks, so in my case this info is vital, but for some it doesn't matter much, I agree. For me, it tells whether I should spend my money on it at all, plus, it makes companies look good and confident at the very least. It's like selling a chopper and not specifying the watts or something.