Quick review on amp 300/2 and comp Diamond Audio D661S. I had this Diamond Audio D661S power by a PP360 for over 6 months. I like how they sounded but was disappoint at the same time. They didn't really get loud and when they would it would sound muddy. I swap it out with a JL 300/2 and the comp came alive. They are so much louder and sound so much clear. For a budget of 160 buck they are worth every dollar.