Internal reflections/resonances are the most likely culprit. The Beyers all share the same characteristic (and Ultrasones too) because they all use virtually the same shell between models.
I'm going to list my COPs in the marketplace in a few days, but if anyone wants them for $150 shipped please PM me.
Edit: Here's the listing, for anyone interested.
Finally finished reading this thread. I just want to clarify some things:
Back around page 30, it was mentioned that there are two other "Custom" headphones, have they been announced yet?
Also, it seems like there is no problem with COPs clipping, as those were just defective pairs?
The COPs aren't the most refined, but the variable vents will allow it to play well with both melodic and the wubwub kind.
I haven't heard the WS99, and it's been ages since I've heard the HFi580 but I would say the COP on maximum setting can give any basshead can a run for its money. The M100 I never particularly cared for and don't think it's worth the price premium over the M80.
tried the earpads, they are the same size, think the headband too, but they should be the same type
Yeah...it seems that most basshead over ears that can go loud are either to big and bulky, heavy or awkward looking (when talking portable use).
Even the COP looks a bit bulky when used outside but at least is really light and comfortable.
The most compact basshead over ear that I've seen so far are the VModa's (LP/LP2/M100). The design of the headband is thin and fits close to your head and the cups are really compact for being an over ear design.
Is time for more companies to design loud/basshead over ear headphones that don't look like you got a half of a astronaut helmet on your head, regardless if your going to use it for home or portable.
Yeah, I hope it's not the time for any of that. The really compact cups of the M100 positively crushed my ears within an hour. The COP doesn't touch any part of my ears, which is how it should be. Want style over substance? Buy Beats.