I agree with you on this. I recently bought a set of Earsonics Velvets. It pushed so much air when the beats dropped (sub-bass and bass notes), that it was literally pounding (pneumatic) my eardrums and it caused fatigue within minutes. From reading people’s impressions on the 1964 ADEL thread, ADEL Tech seems to address this issue and hence my interest in the 1964 ADEL IEMs. However, with my limited knowledge on ear anatomy and hearing mechanism, I am not in a capacity to question if ADEL will protect the hearing from loud music. If it does protect, it is definitely an added benefit that is most welcome.