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About the Evolution 400
The Krell Evolution 400 Monaural Power Amplifier is a compact, high-power amplifier featuring a massive 3 kW toroidal transformer, delivering 400 watts into 8 Ohms, 800 watts into 4 Ohms, and 1600 watts into 2 Ohms. It uses Krell Current Mode, Active Cascode Topology, and Evolution CAST input technology to minimize distortion and noise, providing exceptional sound clarity and power. The amplifier has a low feedback topology with only 8 dB of nested local feedback and no global feedback, enhancing sonic purity. It includes balanced and single-ended inputs, 12 VDC triggers, and protection circuitry. The chassis is available in silver or black anodized finish. Dimensions are 17.3" W x 9.8" H x 18.8" D (43.8 x 24.9 x 47.8 cm), and it weighs approximately 120 lbs (54.3 kg).
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