Can you guys update the specs on these to tell us impedance and sensitivity? That matters way more than what's actually listed (copy-pasted below), some of which aren't even specs (e.g. the partnership between Dekoni and Fosted).
Dekoni Blue is a partnership with Fostex
Semi-open design based on T50RP MKIII
Only Fostex-sanctioned T50RP MKIII mod available
Limited-edition blue ear cups and flat black slider rails
devolutionaryIf by “fairly sensitive,“ you mean “needs noticeably higher volume settings to sound as loud as a 300 Ω HD 6XX” and “you can comfortably turn the volume up to max on an iPhone 6S, and sometimes wish for more headroom,” then I agree. It’s a practical benefit to use a dedicated amp with this headphone, but musically it rewards that effort.
I have the headphone, but I don’t have the specifications on hand, so I do appreciate you posting them.
devolutionaryWell, again at least you showed the specs, and I agree with you it definitely sounds better with some juice (over what a smartphone can give).