A number of years ago, I asked Ray Kimber which of his cables would work best with a McIntosh amp and preamp. He suggested KCAG. Before I purchased a pair, I called McInosh and asked Chuck Hinton what the technicians at McIntosh thought about Kimber cables. He insisted after questioning that McIntosh believed that virtually all cables sounded the same including zip cord. He cited Russell’s work and talked about McIntosh’s relationship with Tributaries. Well, I purchased the KCAGs anyway which made a huge difference in sound--much better than my low level Stealths with my Mac tubes. Ever since then, sad to say because it has cost me much $, I have used many different cables all of which yield a different sound, sometimes as much of a difference as a component upgrade. That was the first time I came to the conclusion that I will always trust what I hear over science that says I should not hear it.