AB Class Live Power Amplifiers
To create an amp that wouldn't bake itself from the inside out, engineers developed a two-transistor design that became the B-class amplifier. It uses one transistor for positive voltages (the peaks of the soundwave) and a second one for negative (the troughs), which puts the neutral point right in the middle. But this isn't perfect, either: the lag between transistors creates an effect called "crossover distortion". Fortunately, there's a simple solution - by injecting a little bit of bias back into the circuit, we can eliminate the distortion while giving up only a small amount of efficiency. The result is an AB-class amplifier, delivering almost all the sound quality of A-class with almost all the efficiency of B-class.
Amps in this category are the most common overall, so it's only natural there would be plenty of choices designed for live sound. There are AB-class live power amplifiers here for systems of all scales, from the typical outputs of the QSC RMX850a Power Amplifier and the Cerwin-Vega CV-900 Power Amplifier to the blistering power levels of the QSC RMX850a Power Amplifier and the Behringer EP2000 EUROPOWER Power Amp. Looking for a happy medium? Check out the QSC RMX1450a Power Amplifier. No matter which AB-class amp turns out to be the right fit for you, it's safe to say you can find it here - just take as much time as you need to weigh your options!