1. Spend money on a system that may be expanded. education electronics A large number of your music collection may be on CDs, but considering the growing popularity of DVD audio you do not need it really does not have to be left behind. At the time you’re only taken with stereo sound be sure you investing in a system that may be designed to new technologies. For example video in addition to audio mediums. Investing in a hifi system because now, but be sure that it includes surround sound capabilities.