@jg7884 Congratulations on your willingness to try - and your subsequent reward.
When I first joined AudiogoN, I thought posts about cables affecting the SQ were absurd. Now, over 50% of the cost of my system in invested in cabling and power conditioning. Worth every penny. After many years of tweaking, I still find power cords to have the most influence in my system's SQ. Enjoy!
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Burn-in is very real. Even when swapping cables already in the system, it takes time for them to re-settle in. Not only does the wire need to conduct electricity but so does the electro-mechanical interface of the connectors.