Let me tell you, this book was my secret weapon for passing the CTS-D exam. I had some experience under my belt, but without this guide, I would've been lost. The way it breaks down concepts made me actually understand the material—not just memorize it.

Sure, there are a few typos here and there (some even carried over to the actual test!), but honestly? That almost helped because it forced me to engage critically with the content. The math practice sections were clutch—don't skip those!

What surprised me most was how useful this became beyond exam prep. I now keep it on my desk as a reference for real-world projects. Those diagrams? Super helpful (though I do wish they were in color).

Pro tip: You can't just skim this book. I made flashcards from each chapter and drilled the calculations until they became second nature. When test day came, I recognized scenarios straight from these pages.

The binding held up through all my highlighting and note-taking too—this thing got heavy use! Whether you're prepping for certification or need an AV reference that won't let you down, this guide delivers.