With PowerWave technology,PowerLight 2 amplifiers take your sound to a whole new level. Not only does it give you tighter bass and clean transparent highs,PowerWave also cuts waste heat,boosts reliability and gets rid of unwanted noise and hum. PowerWave is a revolutionary switching power supply technology that provides ample current to the audio power circuitry by charging the supply rails 230,000 times a second through an ultra-low impedance circuit. So unlike amplifiers that use conventional supplies,the audio signal is never starved prematurely and remains crisp and clean.