At the heart of the new four-channel I-Tech HD lies another Crown breakthrough – DriveCore™ Technology. A culmination of nearly two decades of R&D in PWM and switch-mode amplification, DriveCore is a Crown exclusive that combines hundreds of parts into one chip the size of a your fingertip, resulting in more efficiencies and unsurpassed reliability. Bridging Crown's audio design and Texas Instruments' silicon design, this simple integrated circuit nests much of the output stage – including the modulator stage, error amplifier stage, and patented feedback and PWM modulation circuits for fast recovery on peak transients, accurate reproduction of low-level detail, and precise tracking of low frequencies at high power levels for maximum subwoofer output. In addition, DriveCore provides an extremely wide tolerance for sagging or "dirty" AC line conditions, which means your performance will never be compromised by fluctuating generator power or overloading. Greater accuracy, reduced weight and size, and high efficiency with best-in-class signal-to-noise performance – that's Crown innovation. That's DriveCore Technology.