XXX 2500 WATT 4GA Car Amplifier Installation Amp Kit/Wire
This amp install kit is great.  The power and ground cables are great.  The RCA cables are great.  Everything was a lot better quality than I expected.  The only thing I didn't like was the ground cable was a little shorter than I wanted but everything worked out fine, and the power cable connector for the battery wasn't big enough to go around the battery bolt.  But I just wrapped the power around the bolt and screwed it in.  This was a lot better than I thought it would be.