Looks good.
Just to define what i am looking for in a DYI headphone - I am looking for a sound signature to match or beat the Grado PS1000 series, HD800 series.
The sound characteristics should contain:
Open Soundstage and great specialness (the typical grado sound stage on their high-end line)
excellent bass that is layered without being overly aggressive, overtaking the rest of the sound (better than that of the Senheiser HD800)
excellent midrange with excellent center staging (PS1000 or Senheisser HD800 or better)
excellent highs (PS1000 or Senheisser HD800 or better)
Great body of sound
Cable finish: cable can be thick as I never really had issues with grados line of thick cables. I am a firm believer of the thicker the cable, the more the body of sound you will get.
Headband: Like that on a Sony or Beyerdynamic T1 Series
Cups - metal if possible, but if wood sounds better, then so be it. I like lighter wood.
cup holders - ideally made of metal
cable detachment from the headphones ? Sure, why not.
Cushion: anything that sounds good to my ears minus the wearable fatigue
I cant think of anything else.
Let me know your thoughts of such a dream headphone....