The most expensive part of an audio setup should be the transducer (speakers, headphones). Amplifiers and DACs that can be completely transparent cost mere dollars to make. In the digital realm, a 0 is a 0 and a 1 is a 1. A cable cannot add jitter that affects the signal. If a 0 or a 1 gets off of timing too much, it results in complete corruption of the signal, and nothing resembling an audio signal will come from the DAC.
Don't let your eyes decide how things sound.