I know it's good quality. After connecting my MP3 player to my portable speaker with a 1ft aux cable, the audio was not only louder, but also clearer than the cheap rubber cable I was using. I thought the MP3 player or speakers provided the sound quality. Problem, but it turned out to be an old cable that I was using. Also in terms of durability, the double nylon braid gives me confidence that it will last. In the end I claim that I am not an expert on accuracy and this is just my humble opinion.
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