Review on DESOFICON 2 Pack Lightning to 3.5mm Headphones Jack Adapter for iPhone - Apple MFi Certified, 2-in-1 Charger and Aux Audio Splitter Adapter for iPhone 7, 7 Plus, 8, 8 Plus, 12, 12 Pro, 11, X, XR, XS - Supports iOS 14 System by Adam Tidd

It's junk. Same result in 3 different cars and 2 brand new accessory cables with both new adapters included in this kit. . I've been trying to find a good adapter like this for years and the results have always been the same. The sound quality is good until you connect the adapter to the power supply. Then it's just a static hum over your sound with loud clicks and crackles. I thought at least one of the two packages would be good, but no, they're both rubbish. Every time you see an adapter like this, whoever made it hasn't tested it and is just trying to make a quick buck. Or they tested them and found that the buzzing and crackling is normal. Don't waste money.