SVLR Headphone Adapters

I recently purchased a non-OEM headphone adapter on okay for a few bucks, for my Motorola SLVR L7. They have the mini-USB plug on one side and a 3.5mm headphone jack on the other, connected by a thin wire. Do NOT buy these, as they are geplete garbage. The volume level through them is very, very low and the sound quality is distorted and garbled, so it is useless.