Stormopen OpenAir III — Open-Back Over-Ear Reference-Grade Wireless Headphones

The Stormopen OpenAir III Open-Back Over-Ear Reference-Grade Wireless Headphones represent the ultimate expression of Stormopen’s acoustic engineering philosophy, combining a second-generation planar magnetic driver with the highest available wireless codec performance, a bespoke headband construction from aerospace-grade materials, and a listening experience tuned against absolute acoustic reference standards for professional and audiophile application. The second-generation planar magnetic driver advances the OpenAir II’s architecture with a 0.004 mm thinner diaphragm film at 6-micron polyimide, a conductor trace density increased from 32 to 48 lines per centimeter for finer force distribution uniformity, and a magnet array using N52 grade neodymium magnets at 1.48 Tesla remanence versus N50 at 1.42 Tesla in the previous generation — a 4 percent flux density improvement that translates to proportionally higher sensitivity and lower distortion at all output levels. Total harmonic distortion measures 0.03 percent at 100 dB SPL and 1 kHz, a reference-grade figure achievable in wired transducers at many times this price. The headband is constructed from a single piece of aircraft-grade 7075-T6 aluminum alloy, CNC-machined to a constant 4 mm thickness with weight-reducing pockets reducing the beam mass by 35 percent while maintaining full structural rigidity. The 1,400 mAh battery delivers 28 hours. Net weight is 355 g.