I bought this hoping for a comprehensive reference, and it is substantial. The first chapter alone is a great refresher on filter basics. My main reservation is that it sometimes feels like it's trying to be two books in one: a textbook and a buyer's guide. The sections on specific brands felt a bit generic to me, almost like it was afraid to criticize anyone. As an engineer, I would have liked more hard numbers and less hedging in later chapters, but for a broad overview, it's a solid addition to my shelf.

Finally, a filter handbook that speaks my language! I'm a tech at a repair shop, and Chapter 1's explanation of filter interaction with amplifier impedance just clicked. It didn't just list specs; it explained why they matter in a real circuit. The chart in the choosing chapter alone saved me a project. This is the resource I wish I had years ago. It's a permanent resident on my workbench now.