I would expect that there would be those who disagree with what I've been saying - especially those who happen to own equipment that uses balanced designs.

My conclusions are not based on any one system or systems. They are based on 34 years of working in audio in many capacities from circuit design to media creation. They are based on literally hundreds of blind and double blind listening tests. They are based on working with both balanced and unbalanced designs, simple and complex designs and everything in-between.

To your specific example, I can only suggest the not very practical test of replacing all your signal electronics with completely unbalanced designs which use simpler circuits, and then tell me if you hear a difference.