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Don’t let the size fool you, the PRV Audio MDX400.4 is built to bring serious performance to your system. Delivering 400 watts RMS across four channels, this amp gives you strong, clean full-range sound that easily upgrades any setup. Whether you’re running door speakers or a full system, you get 4 x 100W RMS at 2 ohms or 4 x 70W RMS at 4 ohms, giving you the flexibility to dial in your power exactly how you want it.
This amp is made for real-world installs where versatility matters. You can run it in 4, 3, or 2 channel configurations, and when you need more punch, bridge it to push 2 x 200W RMS at 4 ohms. That means fewer amps, less clutter, and more control over your build. The ultra-compact mini chassis makes it easy to install just about anywhere, perfect for tight spaces like motorcycles, ATVs, or custom builds where every inch counts.


Engineered with efficient Class-D Brazilian technology, the MDX400.4 delivers impressive output without putting unnecessary strain on your electrical system. It’s packed with surface mount components for durability and better vibration resistance, so it holds up even in demanding environments. A built-in cooling fan and heavy-duty heatsink keep temperatures in check, ensuring consistent performance when you push it hard. And at just 0.87 lbs, it’s lightweight without sacrificing strength, making it a smart choice for any high-performance audio setup.
Delivers 4 x 100W RMS at 2 ohms for powerful, flexible amplification across multiple speakers.
The 4.25 x 3.50 x 1.95-inch chassis makes it easy to install powerful four-channel amplification in tight spaces.
Digital Class D technology provides strong output with an average 84% efficiency to help reduce electrical system strain.
Bridge two channels at 4 ohms to deliver up to 200W RMS per bridged channel for additional system flexibility.
A mini heavy-duty cast aluminum heatsink and built-in cooling fan help manage heat during demanding listening sessions.
Multichannel operation lets you configure the amplifier for 4, 3 or 2 channel applications without needing multiple amplifiers.
The lightweight 0.87-pound design is well suited for cars, motorcycles, ATVs, powerwheels and other space-conscious audio installations.
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