A:Answer My headphones work fine, but the auxiliary jack can be touchy. When plugging it into my car, I have to pull the jack partly out of the CD player & twist it just so. This is a brand new unit, BTW. Also has a lot of static in the playback. But I don't have a lot of choice, since my new car did not come with a CD player. Anyway, my advice is to play around with how deeply you set the headphone jack in the unit.