This paper presents an evaluation of stereo enhancement algorithms for the reproduction of stereo music over headphones. Nine state-of-the-art systems were collected and applied to six different stereo programs. A subjective evaluation was conducted to compare the algorithms against each other and against the unprocessed stereo material. The results show that unprocessed stereo music was preferred in the majority of cases over stereo enhancement systems. Furthermore, there are significant differences in the perceived quality of the tested enhancement systems.
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