Easy brother, you're harshing my mellow. Of course comb filtering is reality, we all know that because it's measurable. The question is, does it make a difference in THE LISTENING. This highly controversial Russell design has been the subject of much discusion on various forums, and I for one think it's very interesting to see what people who heard it at the show thought of it. So far, all the reports are positive, and I find that intriguing. Obviously you don't. Anyone else care to weigh in?