Progress in electronics is often measured by how much more power and features can be obtained from smaller and smaller packages. Responding to a growing demand in the sound reinforcement industry for more powerful and reliable amplification in small packages, QSC developed the PowerLight 4.0 without sacrificing the rack size, ratio of watts per pound, and of course audio performance.

With a reputation for sound quality and reliability, the PowerLight 4.0 features QSC's PowerWave technology, a revolutionary switching power supply 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. Unlike amplifiers that use conventional supplies, the audio signal is never starved prematurely and remains crisp and clean. Additionally, PowerWave cuts waste heat and boosts reliability.

The PowerLight 4.0 amplifier also boast a set of useful features. Individually selectable clip limiters lower distortion and protect speakers, and a standby mode allows remote AC control. A wide range of connectivity is provided.