Austrian Audio Hi-X15 Cheap closed back headphone. Stand out features are the outstanding claims regarding the driver, and the creators are ex-employees of AKG. All the headphones in AA's lineup use the same drivers. The X15 is cheapest at $120. As you go up the chain you get better material and design, then finally at top is an open-back version (X65). ^ Not my photo. Just for reference to compare X15 to the X65 and X55. Headphone on far right is the Avantone Pro planar (@rhythmdevils please loaner tour). Positives: - metal hinges - pads are hybrids but pleather ear-side for more isolation and sweat - cheap $120 - medium clamp Negatives: - the sound Sounds like it was created by ex-Beyerdynamic employees. Treble+++ but clean I guess. Sure better transients ... but nauseating like DT770. Spoiler: hybrid pad Spoiler: driver info screen shot from site Rig: Minidsp EARS (click profile for more info) Macbook > Eitr > ModiMB > Vali2 edit: Going to disassemble to see the driver.