Professionals in the audio industry will be into Mix magazine, a publication that follows the latest gear, technology, and news regarding audio.
As the ultimate magazine for practical advice on do-it-yourself projects, Popular Mechanics also provides insight on products, technology, and modern trends in industries ranging from automotive to robotics.
If you know someone who enjoys building and experimenting with robots, then SERVO magazine is the ideal source. They provide tutorials, guides, and products that are highly useful to hobbyists.