Kicker KA51KPX3004 Weather Resistant 4 Channel Class D Car Amplifier

Kicker KA51KPX3004

Compact yet powerful, the KPX300.4 4-Channel Amp delivers up to 300W in a weather-resistant design. Perfect for motorcycles, boats, or tight installs, it powers 2- or 4-speaker systems with precision and clarity.

The KPX300.4 is engineered to deliver massive power in a compact, weather-resistant design — perfect for motorcycles, boats, or any vehicle with limited space. Don’t let its small footprint fool you; this amp is built to drive upto 4 speakers with clarity and precision, without putting extra strain on your charging system.

Designed for versatility, it powers two- or four-speaker setups with ease. Independent gains and a variable 12dB crossover ensure optimal speaker performance, longevity, and sonic clarity. With a wide input range, it’s easy to integrate with virtually any factory or aftermarket radio.

Key Features

• Compact design fits under fairings or tight spaces
• Powers 2- or 4-speaker systems effortlessly
• Up to 300+ watts of clean power
• Weather-resistant construction for outdoor and marine use
• Built-in crossover controls for precise tuning
• Variable 12dB/octave hi-pass crossovers: 60/80/100/120Hz
• Puts very little strain on charging system

Specifications

• 75W x 4 @ 2Ω | 45W x 4 @ 4Ω
• 150W x 2 bridged @ 4Ω
• Frequency Response: 20Hz – 20kHz
• Dimensions: 22cm x 8.4cm x 4.3cm
• Output Channels 4
• Voltage (V) 12
• Class D
• Fuse Rating (A) 40A
• Cable Gauge (AWG) 8
• Amp Turn-On
  • DC Offset
  • 12V
• Frequency Response (Hz) 20-20k
• Filter High-Pass
• Controller N/A
• Input Channels
  • 2
  • 4
• Input Type
  • High Level
  • Low Level
• Input Sensitivity Low Level N/A
• Input Sensitivity High Level 250mV-10V
• Height (cm) 4.3
• Width (cm) 22
• Depth (cm) 8.4
• Colour Black