Audio components are the main engine in producing sound levels that duplicate a live concert or studio recording session. How much power do you need? What kind of extras should I look for? What brands are the most popular with music aficionados? These are just some things to consider when looking for sound equipment. You really need to take in to consideration the size of the room you will mainly be listening in. And of course you want to get the most for your money. If you do your research, you can get some really great deals on Amazon and ebay. People sometimes forget that many of the items found on ebay can be bought now without bidding.