To improve the sound quality of your wireless stereo speakers, start by positioning them on a solid surface and ensuring they are not too close to walls or objects that can interfere with the sound. Add soft furnishings to absorb sound reflections and reduce echo, and adjust the equalizer settings to find the optimal sound. Consider adding an amplifier or a subwoofer to boost the bass and enhance the overall sound quality. Additionally, ensure that you are using high-quality audio files and streaming services to ensure the best sound possible.