Stormopen AirDrift II — Over-Ear Hybrid ANC Wireless Headphones 40H Battery

The Stormopen AirDrift II Over-Ear Hybrid ANC Wireless Headphones with 40-hour battery life represent Stormopen’s most comprehensive noise cancellation solution in the AirDrift line, combining feed-forward and feed-back microphone arrays in a hybrid topology for superior low-frequency noise rejection. Four microphones per earcup — two external feed-forward and two internal feed-back units — create a closed-loop ANC circuit that monitors both incoming noise and the residual sound field inside the earcup, adjusting the cancellation waveform in real time to compensate for earcup leakage and changing acoustic conditions. The result is a consistent 32 dB average attenuation figure across both low-frequency rumble below 200 Hz and mid-frequency hum between 200 Hz and 1,500 Hz. The 40 mm titanium-coated dynamic drivers operate across a 15 Hz to 22 kHz frequency range, with the titanium diaphragm coating reducing distortion at high excursion levels by 35 percent compared to standard mylar drivers. The 1,000 mAh battery achieves 40 hours of hybrid ANC playback at 60 percent volume, verified against IEC 62368-1 test conditions. USB-C charging at 5 V / 1.5 A charges the battery from empty in 2 hours, with a 15-minute quick charge delivering 4 hours of runtime. The adjustable headband uses a stainless steel slider mechanism rated for 10,000 extension and retraction cycles. Available in matte black, slate grey, and pearl white. Net weight is 272 g.