Review on AudioPipe APTV-600.4: Full Range IP67 Waterproof Marine Amplifier for ATVs, UTVs, Boats, and Motorcycles - Black by Carlos Long

Installed over the weekend, works very well. Ease of installation. The speaker wire colors match the wire colors on the stereo wiring harness, making it very easy to connect them correctly. Ground wire black to black. Red power cable to battery. Remote control blue wire to toggle red wire (part of switch on dash). The music on the boat was very low and barely audible with the engine running with the standard stereo. This amp boosts the sound a bit, adding cleaner, clearer sound and louder bass to my 4 regular speakers (I don't have a dedicated subwoofer in my system).