KPX 300W 4-Channel Weather-Resistant Amplifier – Big Power, Small Package

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 up to 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

Download the KPX300.4 Datasheet here

Big system performance, small package convenience — the KPX300.4 makes high-quality sound possible in even the most space-limited rides.