EPICFOUR 4-Channel Amplifier Car Audio 800W RMS, Compact Digital Class D, High/Low Pass Crossover, RCA Line Level Inputs for Aftermarket Radios, Epicenter Link, Smart Auto Protection

Have this moving 2 Alpine S2-65C 6.5" component speakers 2 Alpine S2-80C 8" component speakers 1 Kicker L7 8" subwoofer Audio quality is impressive, super loud and crisp, zero distortion great power on sub channel.

Simple to setup, and powerful. Even with my god awful wiring it still made my car much louder and cleaner sounding than before. Cant wait to test it further once I get my front right speaker working!

Lots of bang for the buck! Plays clean and loud

first off, this amp sounds amazing and doesn't get hot! 5* for great sound despite the 100w/ch @4ohm rating, I was only able to get about 54w/ch(15v ac) with gain turned to about 85-90%. Google Ai says it's because of my head unit, but I had master volume at 75% when I tuned this amp. so -1*

This amp is awesome. I ran my factory stereo (with a t harness) to this amp and upgraded all my speakers. With a sub, it completely changed my entire stereo system. It works great and audio control is what major installers carry. The price is better on Amazon also.

This amp is seriously a great amp. And it does the numbers as advertised. So be careful setting your gains it would be extremely easy to blow a speaker if there not set correctly. It sounded good when I put it in last week but every day I listen to it it sounds better. And that could be the speakers breaking in. It's a longer amp so plan your placement before purchase. I'm happy I spent the money on a good product and did the job correctly because now I'm rewarded with a great sounding system

Bought this amp in March 2025 was a good little amp. Until November 2025 when the subwoofer channel stopped working.

So far it performs well. I thought I had a hardware problem and reached out to support. They were responsive and helped me identify a defective cable. In non-5 channel modes the subwoofer still receives a tiny bit of power. Not a complaint, just interesting.