Are you performing a free air measurement with the IEM and the mic? That doesn't take into consideration the reactive load of the ear canal and of the driver. The results won't just be a simple difference in level between different IEM designs. Doubt even a relative comparison would hold water. Personally, Layla's bass seemed right enough at 7 o'clock, but I had some issue with high midrange unevenness.
6/19/15 at 12:16pm