I am skeptical of many tweaks, based on my and other's listening to changes in my and my friend's systems,
There might be initial 'errors' of construction/cable path, rectified by simply messing about (like wiggling a phone charger cord), or natural cleaning of jacks/cable ends contacts occurring during the reverse process, or, not a criticism but the real possibility of the Emperor's New Clothes factor, based primarily on the desire for results from personal involvement.
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http://douglas-self.com/ampins/pseudo/subjectv.htm
Subjectivism: "Cables are directional, and pass audio better in one direction than the other."
excerpt "Audio signals are AC. Cables cannot be directional any more than 2 + 2 can equal 5. Anyone prepared to believe this nonsense won't be capable of designing amplifiers, so there seems no point in further comment."
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certainly not the final word, but something to consider, especially the AC factor.
There might be initial 'errors' of construction/cable path, rectified by simply messing about (like wiggling a phone charger cord), or natural cleaning of jacks/cable ends contacts occurring during the reverse process, or, not a criticism but the real possibility of the Emperor's New Clothes factor, based primarily on the desire for results from personal involvement.
........................
http://douglas-self.com/ampins/pseudo/subjectv.htm
Subjectivism: "Cables are directional, and pass audio better in one direction than the other."
excerpt "Audio signals are AC. Cables cannot be directional any more than 2 + 2 can equal 5. Anyone prepared to believe this nonsense won't be capable of designing amplifiers, so there seems no point in further comment."
........................................
certainly not the final word, but something to consider, especially the AC factor.