The MINKEZ's SC4M is a superb shielded adaptor that can connects TRRS smartphones and tablets to microphones with a 3.5mm output. This audio accessories is designed to work with Apple iOS and Android devices such as the iPhone, iPad, brands like Huawei, Oppo, etc. Therefore, users who want to link their Audio Interface Sound card to their iPhone or Android phone and record with any app will find this useful. Other than that, SCx4M can be used with stereo microphones, with both left and right channels merged into a mono signal in order to be compatible with TRRS.