Can anyone recommend a good source for electrical engineering in the audio field for someone whose entire knowledge boils down to knowing how to change a tube and how to plug stuff in? I kind of feel like a race car driver that only knows how to put gas in a car to 'make it work.' If I am going to consider myself a recording engineer, I need to know what goes on inside all of my beautiful little boxes. I need to learn about what makes them work, how they affect signal, how to identify high-quality circuitry, and ... well ... EVERYTHING! Any ideas for websites to visit, books to read, or magazines to subscribe to? I would only be interested in audio equipment here, I'm not looking to become a robotics master or a tv repairman.