🔊 Massive Audio PX4 – High-Efficiency 4-Channel Car Audio Amplifier

A car audio amplifier boosts the weak signal coming from your radio and delivers clean, powerful energy to your speakers — giving you louder volume, better clarity, and richer sound detail.
The Massive Audio PX4 is built for clean power, low distortion, and flexible tuning, making it perfect for door speakers, tweeters, and full-range car audio systems.

⭐ What the PX4 Does for Your Sound System

• 🔊 Powers your speakers with strong, clean, and accurate audio

• 🎶 Enhances clarity, detail, and high-volume sound quality

• 🚗 Ideal for mids, highs, and pro audio door setups

• ⚡ Efficient amplification with low heat and ultra-low distortion

• 🔧 A major upgrade over factory speaker power

If you want your music to sound clear, loud, and crisp, the PX4 is a perfect match.

🔧 Technical Performance Specs

• 150W RMS x 4 @ 2 Ohm

• 100W RMS x 4 @ 4 Ohm

• 300W x 2 Bridged @ 4 Ohm

• Input Level: 0.4 ~ 10V (High or Low Inputs)

• Frequency Response: 15Hz – 25kHz

• Low Pass Filter: 50Hz – 750Hz

• Subsonic / High Pass Filter: 20Hz – 6kHz

• THD @ 4 Ohm: <0.03%

• Signal-to-Noise Ratio: >110dB

• Bass Boost: 0–12dB

• Minimum Load: 2 Ohm

• Gain Remote: Not included / not required

• Dimensions: 8.34" x 5.9" x 1.9"

🛠️ Built for Clean Power & Total Control

• Compact and durable chassis

• Ultra-clean audio reproduction

• Wide tuning range for perfect speaker matching

• Runs cool and efficiently

• Perfect for 4-speaker door builds, components, or tweeter systems

💥 Why Customers Choose the PX4

• Clean, high-output power

• Excellent tuning flexibility

• Extremely low distortion for crystal clarity

• Massive Audio quality and reliability

• Works great in daily builds and pro audio systems