Compact audio equipment includes only those integrated audio systems that have more than one of the following functions: radio tuner, tape player, CD player and MP3 player.
In 2004 California took the lead in adopting standards for compact audio equipment. These products typically have very high standby power consumption, which, due to their sheer numbers, amounts to several billion kWh of electricity wasted each year. The California standards set a maximum standby power level of 2 watts for compact audio products without an illuminated clock display and 4 watts for products with an illuminated clock display. The standards were adopted by New York in 2005 (though never set), Oregon in 2007 and Connecticut in 2011. DOE is not currently required to set standards for these products.