The Kicker 45KMA300.4 4x75 Watt 4-Channel weather resistant, full-range amplifier is the audio product where big sound meets big value. Use this flexible 4-Channel marine amplifier to power your system with ease and pump up the sound. Purpose-built for your boat, every KM amp comes complete with marine-grade speaker terminals, stainless-steel screws, conformal-coated circuit boards and ABYC/NMMA-compliant power connections. Powering as many as eight speakers, this amplifier makes your entire boat sound like a floating concert. A powerful 12dB crossover is also included, letting you quickly tune your system to perfection. This KM-Series amplifier delivers as much as 75 Watts into four channels, or 150 Watts bridged into two channels. 

General Features:

• Class D Power Supply
• Stereo Amplifier With Bridging Capability
• Conformal-Coated Circuit Board
• Variable 12dB Crossover
• KickEQTM Variable 12dB Bass Boost
• ABYC/NMMA-Compliant Power Connections
• Selectable high pass, low pass or all pass
• 316L Stainless-Steel Hardware Included

Technical Specifications:

• POWER [watts/ch], 2 OHM STEREO 75 x 4
• POWER [watts/ch], 4 OHM BRIDGED MONO: 150 x 2
• DIMS [in] 2-5/16H x 7-1/8W x ...L 12-7/16
• DIMS [cm] 5.9H x 18.0W x ...L 31.5
• FREQUENCY RESPONSE [Hz]: 10-20k, +0/-1dB
• INPUT SENSITIVITY: High Level 250mV-10V, Low Level 125mV-5V
• SIGNAL-TO-NOISE RATIO: >95dB, a-weighted, re: rated power
• ACTIVE CROSSOVER: 12dB/octave, variable 50-200Hz
• KickEQTM BOOST Variable to +12dB, centered @ 40Hz