Several thoughts on this discussion.
I have no problems with A-B cable comparisons but I do have some questions about the Y-Adapters.
What are they made of and are they of good quality or are they cheapies? In my experience most adapters aren't made very well, I'll admit there are exceptions. Could the adapters be a bottleneck?
Maybe the cables you've compared actually do sound similar. I had this happen when I compared 3 different cables brands recently. They all sounded very good but very similar.
I have no problems with A-B cable comparisons but I do have some questions about the Y-Adapters.
What are they made of and are they of good quality or are they cheapies? In my experience most adapters aren't made very well, I'll admit there are exceptions. Could the adapters be a bottleneck?
Maybe the cables you've compared actually do sound similar. I had this happen when I compared 3 different cables brands recently. They all sounded very good but very similar.