Guide to Stereo Component Features and Specifications

After deciding on a receiver, integrated amplifier or separate components, power output is the next consideration. Power output requirements are determined by the speakers, the size of the listening room and how loud you like to listen. Power output specifications are commonly misunderstood. An amplifier with 200-watts per channel will not play twice as loud as an amplifier with 100-watts per channel. In fact, the difference in maximum volume will be hardly audible, about 3 decibels. A typical amplifier playing at a moderate level will only output about 15-watts of power to the speakers. When the music reaches a peak or crescendo the amplifier will output much more power, but only during the period of highest demand. Read more about amplifier power and how much power is really required.