This adapter converts a single-plug helicopter headset (U-174/U, U-93A/U or equivalent) into a dual-plug general aviation headset [PJ-055 (.25 inch / 6.35mm) and PJ-068 (.206 inch / 5.25mm)]. Impedance is not changed.
Used 7 on heavily oxidized Airstream. Sanded off oxidation. Presto changeo, an almost mirror-like finish. Will stick with Nuvite. Important to follow instructional video.
This is an amazing aid to my fisning. Something serious inland fishermen should have. My only regret is that I didn't have this over the last 20 years.