HiFial,
I would say after 30 plus years of playing in this great hobby, my system is also very resolving and bordering on live sounding. With my DCS front end and Pass Labs combined I need a very phase coherent cable that has no tendencies at all and that is where all other cables have failed in my system. I also tried the D7 speakers cables and at $1300 for a 2 meter set I thought they were very good sounding but the D8 speaker cables are a complete different level; not sure why. I also run a full loom of HD cables and have P4 power cables throughout the system rather than mixing and matching cables. I did have some of the second tier cables by HD and thought they were very good for the money but the HD top cables are a complete different level than their second tier cables, as I assume this is true with other top cable manufacturers. I am not sure what HFC speaker cables cost but at $2300 the D8 is the best speaker cable I have heard in my system over the last
30 years with a bass energy that takes my speakers down a full octave. The P4 power cables also are the best I have heard and at $1800 they cost almost 1/3 of the cost of my previous power cables. I did find adding the P4 to complete the loom made a huge difference with the overall sound because other power cables that I tried with the HD speaker cables and interconnects were getting exposed. I not saying what you heard in your system was not what you heard but now that I am using the top HD cables and P4 power cables combined, the real emotion is there and with other cables is was only close.
I totally agree that disconnecting any cable can really hurt the sound of that cable for many hours after reconnection and perhaps even more so on the HFC because of their design but I do not understand how any cables hooked up after you take the HF cables off would benefit; could you please explain?