Powered subwoofers (also known as active subwoofers) have a built-in amplifier or power source, so there’s no need to connect them to a separate, standalone amplifier – this can make setup easier.
Powered subwoofers are typically the preferred choice in a setup where only one subwoofer is required. They’re also the most popular solution, hence why all the amps on our list are powered. However, you’ll need an external amp with a passive subwoofer, which adds to the setup cost.