KICKER Amplifier and Amp Kit Package of 2 Items - LX Series 500W RMS Class D 4-channel Amplifier and 4AWG Complete Wiring Kit Bundle of 2 Items: Kicker 51LX500.4 LX Series Class D 4-channel Amplifier Kicker 46CK4 C Series 4AWG Complete Amplifier Kit 4-channel LX Series Class D Premium Car Amplifier RMS Power Rating: 4 ohms: 125 watts x 4 chan 2 ohms: 175 watts x 4 chan Bridged, 4 ohms: 450 watts x 2 chan Max power output: 1100 watts Sensitivity: 95dB Frequency Response: 20-20,000 Hz Efficient Class-D amplifier Digital Diagnostic Tool Included Gain-match LEDs show you perfect gain setting Customize Appearance with Reversible Center Panel and 11 RGB LED Accent Colors FIT+™ Technology, accepting low- and high-level signals up to 40V, with full differential inputs created to eliminate unwanted noise LX features choice of turn-on modes and a bevy of protections for thermal, circuit, and voltage Variable Bass Boost (0-6 dB bass boost, variable center 20-80Hz, variable bandwidth 1-5) Subsonic Filter (10-80Hz, 24 dB/octave) Variable Selectable Electronic Crossover off/HP/LP/BP; var HP 20-5kHz, var LP 40-5kHz (amp1) Dimensions: 8-7/16" W x 9-7/16" D x 2-3/8" H 4AWG C-Series 2-Channel Complete Amplifier Kit Top-quality, Hyper-Flex power, ground and turn-on High-performance K-Series speaker wire and interconnects in ultra-compact, easy-to-use design