Pai Audio MR4

Please note that the upper treble peak is not as present in my ears (it has more energy in the measurement above because due to the thick nozzle, I cannot get the IEMs deep enough in the coupler, so the resonance around 9 kHz is more present than it actually is - in my ears, it is just 1.5 dB greater than the ground line).

MR4 (green) compared to the InEar StageDiver SD-2 (orange):

MR4 compared to MR3 and MR2: