I bought two of them and found that they don't have built-in speakers. It only works via external speakers with an AUX cable, unfortunately. I currently use the UE Boom as an alternative. I also get sound, but not 100% or muffled (e.g. in shooter games like CoD I don't hear the voices of the soldiers, or in ordinary video sequences I don't hear the voices well). Can I solve the problem by buying external PC speakers (e.g. Logitech) with AUX connection? Can anyone help me? Thank you!