I purchased 3 of these through the seller WELLGOAL. Each had faulty and misaligned connectors, resulting in messed up audio. If you've ever pulled your headphone plug out slightly, and only heard echoey background music without the vocals, it sounded like that. All 3 were also slightly different lengths (bad quality control?). The adapters did not work on the following devices: iPod Nano 4th Gen, Samsung Galaxy Tab 3, iPod Touch 4th Gen, Kindle Fire HD.