Ultra-Lightweight 1000-Watt Class-D Power Amplifier with SmartSense Loudspeaker Impedance Compensation. ¥ Delivers 2 x 500 Watts into 2 Ohms; 2 x 300 Watts into 4 Ohms; 1000 Watts into 4 Ohms (bridge mode) and weighs less than 7.3 lbs / 3.3 kg ¥ Ultimate reliability through revolutionary cool-running High-Density Class-D technology with "near-zero" thermal buildup ¥ Ultra-efficient switch-mode power supply for noise-free audio, superior transient response and low power consumption ¥ Built-in stereo crossover with low-cut, high-cut and full range mode ¥ SmartSense Loudspeaker impedance compensation features fully linear frequency response at any speaker load impedance ¥ "Zero-Attack" limiters offer maximum output level with reliable overload protection ¥ Detented and illuminated gain controls for precise level setting ¥ Precise 4-segment Signal and Limit LEDs to monitor performance ¥ XLR and 1/4'' TRS combination input connectors for compatibility with any source ¥ Professional twist-lock speaker connectors for ultimate reliability ¥ Independent DC, LF and thermal overload protection on each channel automatically protects amplifier and speakers without shutting down the show ¥ ÒBack-to-frontÓ ventilation system prevents thermal buildup for reliable operation