CREST CD2000 POWER AMPLIFIER 8 Ohm Stereo - 560 W 4 Ohm Stereo - 1000 W 2 Ohm Stereo - 1200 W 8 Ohm Bridged - 2000 W Dramatically reduced net weight Linear power supply / Class D output stages Very low current draw Latest generation of high-speed, mosfet output devices Cooled by variable-speed fan with back-to-front airflow Inputs: balanced female XLR, 1/4" TRS combi jacks Outputs: Speakon and five-way binding posts Mode selector switch for stereo, parallel and bridged-mono operation Ground-lift switch and rear panel circuit breaker Recessed, stepped attenuators with removable knobs 16-gauge steel chassis, cast aluminum front panel TourClass protection circuits ACL (Active Clip Limiting) prevents speaker damage by providing gentle gain reduction when signal approaches the clipping threshold IGM (Instantaneous Gain Modulation) monitors speaker loads to detect conditions that may over-stress output devices, allowing safe operation into nominal 2 Ohm speaker loads AUTORAMP gradually increases gain to the attenuator level-settings when the amplifier is turned on, preventing abrupt turn-on levels Other protection features include: short circuit, DC voltage, comprehensive thermal management, current in-rush turn-on/off transient and sub/ultrasonic input