kicker KX600.1 or jbl BP600.1

They are pretty close although in my opinion the JBL is a better choice. First off the JBL will put out 600+ watts at both 1 and 2 ohms. The JBL also puts out a little more power then the Kicker will, and the JBL is less expensive. But the Kicker comes with a remote bass knob and has better esthetics if that matters.

The Kicker KX600.1 is better. The power ratings are quoted @ 13.8 volts. When you ride is running the amp rec's 14.4 volts. The more volts = more output power. My amp is a Kicker IX2302, rated @ 360watts x 2 @ 2 ohm at 12.5volts, but when my car is running it puts out 410watts x 2 @ 2 ohm(which is stated by Kicker on the Box of my amp). I'm not sure about JBL, But I do know you get what you pay for, & skimping on the amp is not a good idea. A great amp can make a sh*tty sub sound good, imagine what it can do to a great sub? Amp power ratings don't really mean sh*t. Its all about the internal goodies. A Legacy Amp rated for 1000w x 1 is about $50.00, why not buy that? Probably because you know its sh*t. I'm not saying JBL is like Legacy, however I believe Kicker has beefier internal capacitors, & steeper crossover slopes. Don't let someone tell you which to choose. Find out for yourself, visit a dealler for each.

Ok here's the scoop JBL is not skimping on the capacitor's or any of there internal parts. JBL is also rated 600.1rms at 13.8 volts. The JBL is also 1 ohm stable something that the kicker is not if your looking for pure bass power with out all the filters and knobs go with the JBL. But if you want tunability then go with the Kicker. The only thing jbl is lacking in is there features hince the new line the bpx which has all the features but is more expensive. It's all about features or no features the jbl has 3 knobs the kicker has 8. Or you can take a look at the bpx line by jbl which is about the same price as the kicker with the same amount of features.

 i think both are close ,i like both kicker and jbl , its a really close call imo ,i have a kicker ix 130.2 and its a reliable powerful, and clean sounding piece of equipment  and reliable too!