I'm making a stereo to mono mixing audio cable that is used for connecting smartphones or other media players to some older mono amplifiers. The audio cable, mixes the stereo signal through two ...

Discover a step-by-step guide to building your own DIY external microphone for smartphones using old earbuds and a drinking straw. In this tutorial, learn how to safely extract the microphone ...

Tested and researched models we stand behind from Jackery, EcoFlow, Anker and more. Editor’s Note — February 2026: We’ve updated our story to make sure items are in stock and available, plus we added ...