A digital cable that is not up to par will result in problems. Other than that perhaps the improvements in Bass and Treble might be Expectation Bias. One might ask, what is the property of such a cable that might improve SQ? Upon further examination the digital problems of synch and jitter results in audible defects. There should be no improvement to be had over a stream of digital data, either it's good or bad. Comparing audio is no easy task. I'll meet you over at Jersey Freeze for Ice Cream.