The Global Positioning System (GPS) is a network of satellites that makes it possible for travelers to pinpoint their geographic positions. A GPS receiver needs to use only three of those satellites to calculate positions down to 20 feet, a …

As we make yet another big leap in music formats — from CD to MP3 — it seems crazy to even think of discussing the staying power of the now-ancient turntable. However, even though discs and data have successfully replaced …

If you haven’t played an electronic keyboard recently, you’re in for a treat. Today’s models boast high-quality sounds, innovative controls, interactive tutorials, recording capabilities, and even PC ports — all in a package you can tuck under your arm. Key Features Electronic …

Smaller can be better — such is the case with shelf speakers. It used to be that you needed mammoth speakers to provide big sound. Not anymore. Today’s compact speakers — often called “shelf speakers” — compete handily with their …

No one is pickier about final audio output than an audiophile. And for many, the best output comes from the biggest boxes. Sure, there are some bookshelf speakers that can compete with their oversized counterparts on just about any sonic …

Sick of fumbling with those awkward microcassettes and analog dictation machines? Digital voice recorders make your memo and note-taking tasks a whole lot easier. Many of these palm-size recorders let you record speech and transcribe words directly into text via …

Boombox. If that word reminds you only of the ’80s — streetwise stereos blasting LL Cool J or the Sex Pistols while hip kids mosh or breakdance in the streets — then you are sorely behind the times. Although today’s …

It is the first thing you see and hear in the morning, every morning. So why settle for a plain windup or a boxy clock radio? There are hundreds of alarm clocks to choose from, each with its own set …