Multi-channel audio has become mainstream and vendors have come up with many types of basic and more advanced technologies such as wireless surround sound speakers, virtual surround sound to simplify the installation of home theater systems. I will take a look at some of the products and technologies which have emerged and give some pointers about selecting suitable components for a hassle-free setup.

Online radio such as AOL Radio, Slacker, Pandora and Last.fm have gained popularity lately. In addition, many wireless devices such as mobile phones support these platforms. Are local radio stations doomed? I will take a closer look at online radio to try to answer this question. In particular I will examine the impact of online radio on local broadcasters.

Newest wireless audio gadgets such as iPods, wireless headphones and cell phones support new wireless protocols. These protocols are supposed to cut the cord and deliver perfect high-fidelity audio. I will examine whether these products keep their promise to deliver perfect-quality audio. Also, I will look at the underlying technologies.

Choosing the perfect audio amplifier can be overwhelming given the large number of different types and technologies. I will help you understand some of the basic amplifier jargon terms. This knowledge will help you choose the perfect amplifier.

Portable speakers are extremely useful, allowing you to take them from place to place where ever you happen to be going. When you look to buy a portable speaker system there will be a few things you will want to consider.