VONYX Active Powered PA Subwoofer 15 Inch Low Pass Bass Speaker DJ Disco Sub 600

  

A built-in 600W amplifier makes it ready to plug in and work straight away with no external amplification needed. Featuring a built-in 600W amplifier, a phase switch to let the sub acoustically play along in phase with the main speakers, reproducing an excellent deep bass sound and an IN/THRU connection for line-signal-chaining to another subwoofer.