Stormopen StudioPro II — Over-Ear Flat Response Wireless Studio Headphones

The Stormopen StudioPro II Over-Ear Flat Response Wireless Studio Headphones advance the StudioPro line’s professional audio positioning with a precisely calibrated frequency response target developed through an 18-month collaboration between Stormopen’s acoustic engineering team and a panel of professional mixing engineers from recording studios. The target curve deviates from a strict diffuse-field equalization by applying plus 2 dB shelf boost below 80 Hz to compensate for the bass attenuation that occurs when monitoring through headphones versus loudspeakers in an acoustically treated room — the Harman headphone target curve adaptation used as the starting point for Stormopen’s proprietary Pro Flat reference. The 40 mm drivers use a dual-layered diaphragm construction with an outer biocellulose fiber skin bonded to an inner mylar backing, combining the natural damping characteristics of biocellulose with the dimensional stability of mylar across the temperature and humidity range typical of recording studio environments. The biocellulose outer layer is sourced from bacterial cellulose cultures and processed into diaphragm sheets at 0.04 mm thickness using a filtered casting process that produces a uniform density within plus or minus 3 percent. LDAC and aptX Adaptive codec support provides wireless operation at up to 24-bit depth with adaptive bitrate management. The 1,200 mAh battery delivers 28 hours. Net weight is 305 g.