The most important thing to pay attention to with an Aux cable is the protective wiring because if its cheap and you have a few wires running against each other, the electricity gets disturbed & you get a very soft buzzing sound. I would have thought when you spend nearly $300 on a pair of ear phones the the back up replacement would be the same leather type of Ear pad not this cheap plastic replacement. Nice plastic, they sit securely in ears. Okay, these SHOULD be pretty nice headphones for $150, BUT there are quite a few caveats that put me off of these. I did not touch the flame to the plastic sleve except where you solder. Had to request a new pair due to the short amount of time we owned and she wore them. It even collapses for storage and fits 2 bikes perfectly. I bought this for my new airpods pro. I like that it minimizes your remote needs to one . maybe a bit narrow.