I swear that these sound pretty dang close to an open Koss Pro DJ 100. Not much difference in sound signatures. Why also are closed headphones clearer than those that are open? I don't get that. If you block off all air getting inside the Annie it sounds crystal clear. Did someone try that yet? Could be placebo, but it's so extremely easy to hear the difference.
The 65th has pretty much the same bass quantity as my favorite DJ100 when totally closed off. Less low-bass though for sure. If I could get rid of it's shouty upper mids when totally closed off it'd be absolutely my favorite headphone in the world.
Seriously someone take one for the team and try to cover the outer grill with something and listen to the mid-bass. I think the treble suffers even more though and it wasn't apparent at first. No I'm not saying to use the 65th closed. Just to hear that bass.
You really can tweak the sound slightly by limiting what air gets inside. Maybe I just have golden ears Not likely since I can barely tell the difference between an ODAC and Modi.
So yeah it's weird how when you make the 65th more open it has more low-bass presence and when totally closed more mid-bass.
I want an open DJ100 dang it. The HD-650 is pretty close, but more laid back and more muffled (but still clear).
Right now the difference between the DJ100 and 65th is:
More low bass on the DJ100 (duh, it's closed)
Slightly more forward upper mids with DJ100
Treble is pretty close in quantity
Nearly the same amount of mid-bass when the 65th is closed off
I know that nobody cares, but it's really cool to think about how much better the 65th could get.
Edited by tdockweiler - 3/22/13 at 10:50am