It took all of 400 hours for my 4S11 cables to settle in. I ran them 24/7 for 20 days. Yes, some days they will sound great and then not. Once you get to the 200 hour range, all the changes from there on in will be for the better. Canare also told me 400 hours as well. I already have a thread on Canare 4S11 I started in December2019. I concluded it in early 2020. If you read through it, you will see how they sounded at different intervals.
Stick with it, they are the best thing since sliced bread.
Stick with it, they are the best thing since sliced bread.