Submitted by Freestalker_dot_fr t3_10o5ty9 in headphones
Yesterday I was searching something on the web and I found this : https://daystarvisions.com/Music/HE4-Headphone_Frequency_Response_Graphs.pdf You can ignore : Fig. 17: Metal571 MiniDSP EARs FR graph for AKG-K371 (Edit 2 : It's an Audeze headphone)
I let you look at the graphs. The publication compared the measurements of GRAS, Head Accoustics and 5128 HATS. Even with the HMS II from Innerfidelity and Rtings we have different results. The GRAS rigs show variations in measurments. They should be the same as they come from the same standards. You also can't make a compensation from GRAS to 5128. And when you think about headphones unit to unit variations of the same model, it will lead to different results.
Sorry but I think with headphone measurements I begin to have this : https://en.wiktionary.org/wiki/acatalepsy The doubt is higher and higher. It's not good.
Edit : Please do not read the text ! Just look at the comparison graphs ! (Edit 2 : I didn't read it because there could be non scientifical aspect on it. Do not see it as manipulation, I just wanted to share the comparisons)
[deleted] t1_j6col7v wrote
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