Lol, you made your post unquotable somehow.
I figured since Mal owns a gazzilion headphones and yet still rates the Q40 pretty high (He must be insane!) It appears I have fallen off the ladder of headphones...but have I? I'm still trying to figure that out. I am giving the Q40 a good workout.
Half that paragraph contradicts the other. If he highs are not harsh and bright how can they be sibilant? I'm searching hard for the sibilance.
And being only 64Ohms...I believe that makes it even more portable and less required of an amp...even though there is an immediate difference in detail between amping and the Q40's seem to require less volume then other headphones through an amp.
I can see where this could be interpreted as contradictory. However, this is a specific peculiarity of the Q40 that stands out to my ears. Also, sibilance is not about brightness across the highs, but occurs I believe between 8K-10K hz? Therefore, I hear the annoying "SSSSSS" sound with vocals, but overall the highs present accurately regarding instrumentation and general tonality of vocals as opposed to headphones like some Beyers that present as bright across a wider range. I hope this better explains what I am hearing.