Various implementations include vehicle headrest configurations and related audio systems. In some cases, a headrest includes: a main body having a front surface to support a back of a user's head and a pair of acoustic channels each formed in part by a side wall having a front edge that is offset from the front surface, the main body having a portion configured to receive first and second transducers, where a transducer mount in each of the pair of acoustic channels for mounting respective ones of the first and second transducers, where a dimension (Dimension C) is defined by a rotation angle of the transducer mount relative to a centerline of the vehicle headrest, wherein Dimension C is approximately −20 degrees to approximately zero degrees.