For spatial audio reproduction in the context of virtual and augmented reality, a position-dynamic binaural synthesis can be used to reproduce the ear signals for a moving listener. A set of binaural room impulse responses (BRIRs) is required for each possible position of the listener in the room. The required spatial resolution of the BRIR positions can be estimated by spatial auditory perception thresholds. If the resolution is too low, jumps in perception of direction and distance and coloration effects occur. This contribution presents an evaluation of spatial audio quality using different spatial resolutions of the position of the used BRIRs. The evaluation is performed with a moving listener. The test persons evaluate any abnormalities in the spatial audio quality. The result is a comparison of the quality and the spatial resolution of the various conditions used.