hi audiophonics. thanks for the best price of minidspEars in europe. the ears work great. if helps me to get a better feeling of what headphones are really producing at their outputs. together with REW they are a great tool. comparing my measurements to the russian website https://reference-audio-analyzer.pro/en/report/hp/denon-d2000.php also showed that the measurement is really quite reliable.
ps: as usual in measuring audio equipment - measure to get information but trust your ears :-)