Hi,
Thanks for the time you took to reply.
For some reason (totally not rational...) I am not really into in-ear phones :-(
But I can always change my mind and will give the Chaconne a thought
Considering the bass amount that should be produced...
For that I have my own reference : and that is my stereo system.
That system can produce a nice amount of bass... but it also is somewhat a "Hi-Fi" system.
So it produces bass when the bass is on the record.
And then it is a nice, totally "dry" bass...
Else, it does not
I expect a headphone to do more or less the same.
That is why I am not a great fan of the Oppo PM-3. First it is a little too tight around my head and as such is not as comfortable as ALL others :-( I find it overall a little shy in all areas. It produces hat I would describe as a soft, well balanced sound, with an emphasize on mids. That is probably well for really really long listening sessions (except it is not comfortable enough for that) but I like it when the clocks in Pink Floyds "Time" rip my ears off with the trebles or when the big drum in "Cravanserai" (Loreena MacKennitt - Nights from the Alhambra) shakes the bottom of my belly with the bass it produces... And that, the Oppo PM-3 does not do :-(
On those respects, I think the Nighthaxk, the HD700 and even the H9i do a better job...
All in all, I'd say the Nighthawk and B&O have a nice sound to listen to rock/jazz/electro... but may lack some of the finesse of the HD700 when it comes to play Classicla music.
Of course, all the above written is purely subjective and does not depend on any measure... but my ears which is of course a highly controversial measurement reference device