I sold a audiopipe ap3000.1d to a guy on Craigslist a couple of years ago. He calls me after he gets it hooked up saying that it worked great for about 10 minutes and then it started cutting off at high volume. After trying to talk with him and figure out why it was shutting down, I had him send me a picture of the wiring. The amp was being powered by a lawnmower battery. That's it. No power wiring was connected to the car. When I asked him why it was wired like that, he said his car was leased and he couldn't modify it. Lol.