We are a PRV Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

The PRV Audio QS400.4 2 Ohm Class-D Full Range Amplifier is built for car audio enthusiasts who want serious performance without taking up space. Its compact high-fidelity design with a small heatsink makes installation easy even in tight builds, while still delivering clean and accurate sound. You get strong 4-channel full-range output that keeps your mids, midbass, and highs balanced with clarity and detail that makes every track feel alive.
This amplifier is engineered for real world use, not just specs on paper. With 2-ohm stable performance, it holds consistent power delivery even under demanding loads, making it perfect for setups that push their system hard. Advanced thermal management keeps everything running cool during long listening sessions, while the high power efficiency design ensures you get strong output without wasting energy or adding unwanted distortion. The result is a clean and reliable sound that stays solid even when the volume climbs.


The QS400.4 is made for builders who want flexibility and professional level results. Its wide application compatibility works great with component speakers, tweeters, and full range setups, giving you freedom to design your system your way. Clean signal amplification keeps your audio pure even at high volume, so your music stays detailed and distortion free. Add in its ultra compact chassis and professional grade build quality, and you get an amplifier that is easy to install, dependable under pressure, and ready to bring your system to life with tight midbass punch and crystal clear highs.
Features:
Specifications: