Product ID: KAC-X501F Category: Amplifier Kenwood KAC-X501F 4-Channel Amplifier Description: Kenwood exclusive PowerSlide feature greatly improves cooling efficiency with its auto-open-close slide panel on top of the amplifier. Key Features Power output@ 4 ohms,50 Wx4 Maximum Output power: 600Wx2 Power Slide Bass Management System PowerSlide/B.M.S head unit interface Power MOSFET Switching Power Supply Variable Low-Pass Electronic Crossover: 50-200Hz, 24dB per Octave Variable High-Pass Electronic Crossover: 50-200Hz, 12dB per Octave Brushless cooling fan: 3 (1 Top -Mounted) Variable Band Reject Filter: 40Hz-200Hz Selectable Infrasonic Filter Dimensions: 14-15/16 x 2-1/2 x 10-11/16 (WxHxD) KENWOOD MANUFACTURE WARRANTY.