In the past year so our pads have become quite popular with a number of headphone's. As ZMF grows I want to continue to offer earpads that serve multiple purposes. Through a lot of experimentation and R/D I found that a "medium" amount of perforations in an earpad increases air-flow and decreases bass and enhances the soundstage. So now for the first time ZMF Perforated Ori and Eikon pads are available on MassDrop, along with the standard models of each pad, and the pilot pad, all at a nice discount: https://www.massdrop.com/buy/zmf-pads-for-fostex-and-audeze Also in the coming months, be on the lookout for "ZMF Faux Suede" pads and new "flatter" ZMF pads that allow the ear to be closer than any of our other offerings. These will be available in sizes that work on many over ear headphones. Also, many have asked how perforated pads sound compared to their non perforated counter-part, here's some quick thoughts: Typically perforated pads increase airflow and will lessen the bass. A headphone should somewhat be tuned for them for them to work best. Best rule of thumb is if the original headphone has perf pads or velour then perf will work well without a change in sound sig too much, if the original pads don't have perf or have some sort of solid material then non perf will change the sound sig less. Ofcourse you can modify a headphone to work better with the perforated pads if you prefer them, generally by lessening the airflow on the front side of the headphone somehow. Then, if you want a decrease in bass or more neutral/spacious sound then the original sig, perf will do well for that as well on a headphone that originally has non perforated pads(and vice-versa). I tried to not put too many perforations on these as too let "all" the air through to lessen impact too much on non perf cans, but it will surely lessen bass. On open headphones perforated pads should have less of an impact on bass regardless of the original pads structure, although the same rules apply.