“Best single resource for sound system optimization” –
Harry Brill Jr.

“Bob is thorough, complete, methodical, and passionate about the laws and facts of physics. He includes rules-of-thumb and cheat-sheets that will give you instant insight into the invisible.” -Chris Gille “Papa Audio” (Willow Creek, S. Barrington, IL)

“What surprised me most about this book was how readable it was.” -J. LeBrecht (Oakland, CA USA)

“Mr. McCarthy covers so much intensely technical detail with such amazing clarity and wit that I find it to be pretty compelling reading. He uses a lot of great quotes and dry humor to lock concepts into the readers mind. I’m loving it!” -Diana “dianar332” (Oregon, United States)