Measurements are up! No surprises really, although I wish treble was a bit more extended. Bass is more extended compared to the ER4S, and mids are neutral enough. Seems like with iems we have bass, mids, and treble. Pick two lol.
From the frequency response graph it looks like the F111 lacks the 1khz to 3khz emphasis that the ER4S has. Do you hear that being the case?