I purchased this amp to replace my factory installed Sony amp and speakers. The factory Sony units worked well but were six years old. I installed this amp and complemented it 4 rockford fosgate 6 1/2 marine speakers and a 10 inch rockford marine sub all from sonic. This is an incredible system. Clean and clear to the limit. Clear sound at 35 knots, the envy of the marina. Sonic will meet or beat any price and you will have your equipment within a few days, even if you are on the other coast as i am.

This amplifier is great. I have this amp paired with 4 6.5s and 2 10" subs. Its clear, loud, and the subs hit hard. I'd recommend adding the bass controller for more flexibility. I only wanted one amplifier so I decided to wire the two subs in parallel and they hit harder now then they did with the old junk amp that came with the boat. I was a little worried about the power for the subs, but they hit hard and the amp was certified at 975 watts. The sounds are more clean, clear, and more crisp than before. I'm using 4 Infinity 6.5s (very crisp/clear) and I'm now upgrading to 2 new 10" JLs (which should hit even harder). This amp is solid and should provide a good foundation to power your boat system. Installation was pretty simple. I gave durability a 4 because I'll need more time with the product. So far it's great.