Kenwood X303-4 eXcelon 4-Channel Amplifier 600W Class-D Car Audio Amp

X303-4 Class D 4-Channel Power Amplifier Product Description: The Kenwood X303-4 is a compact 4-channel amp that’s perfect for upgrading your door speakers without overcomplicating the build. Clean power, small footprint, and part of the eXcelon lineup—so it’s built to sound better and install easier. This is a go-to for clean daily systems where you want more volume and clarity than a head unit can deliver, but don’t need anything crazy. What it does: 4-channel amp for door speakers or small full-range systems Compact size for tight installs Clean power upgrade over factory or radio power Specifications: Power Output (RMS): 50W x 4 @ 4Ω 75W x 4 @ 2Ω 150W x 2 bridged @ 4Ω Max Power: 600 Watts Amplifier Class: Class-D (efficient, compact design) Frequency Response: 20Hz – 50kHz Signal-to-Noise Ratio: ~90 dB Crossovers: High-pass: 50Hz – 200Hz Low-pass: 50Hz – 200Hz 12 dB/octave slope Bass Boost: 0 – +18dB @ 40Hz (B channels) Inputs: RCA low-lev