Hi Barto,
Which model HD cables do you have? My understanding is the higher the model the longer the break-in. The D8 speaker cables I am using took close to 400 hours to fully open up. Initially and during the first 100 hours or so, I experienced the cable fluctuating between slow flubby bass to periods of stridency. It took quite a bit of time to settle, eventually creating a musical yet resolved presentation. My system, which is analog and tube driven leaves no want for detail.
The power cables took even longer.
Which model HD cables do you have? My understanding is the higher the model the longer the break-in. The D8 speaker cables I am using took close to 400 hours to fully open up. Initially and during the first 100 hours or so, I experienced the cable fluctuating between slow flubby bass to periods of stridency. It took quite a bit of time to settle, eventually creating a musical yet resolved presentation. My system, which is analog and tube driven leaves no want for detail.
The power cables took even longer.