Digital audio subwoofers for vehicles are the in thing. The digital age is spreading to encompass all available products from cameras to car speakers via the digital equipment that run the electrical components of your vehicle. They say good things come in small packages, and this certainly would be the case here. You can just strap it in place in your car and connect up the few necessary wires. It looks stylish and this particular model is finished in a leather covering. This both looks good and adds an extra layer of protection to the subwoofer. It looks very similar to a tube in shape, but it’s not a tube.
For more info, see 3 Types of Car Subwoofer Speakers