Behringer KM750 Professional 750-Watt Stereo Power Amplifier with ATR Overview: KM750 The remarkable KM750 packs a heart-stopping 750 Watts of output power into a lightweight (18.7 lbs/8.5 kg) package, thanks to our Accelerated Transient Response (ATR) technology.

Ample power (750 Watts in Bridge mode; 2 x 400 Watts @ 4 Ohms; 2 x 200 Watts @ 8 Ohms) and high-tech efficiency combine, giving you a supercharged workhorse that will keep your rig kicking for years and years to come.

Accelerated Transient Response Delivers the Knockout Punch It takes huge pulses of energy (current and voltage) to propel a woofer cone out fast enough to match a bass beat. That’s called Transient Response and it’s the holy grail of amp design.

By carefully selecting transistors with extremely high slew rates and optimizing other proprietary parts of our circuitry, our amps are able to react instantly to even the most demanding electronic bass impulses. If the woofers in your PA system can keep up, your audience will hear a tighter, crisper, more natural sound.