Active subwoofer

110/220V HIFI Mono 350W Heavy Subwoofer Digital Active Power Amplifier Board Pure Bass Professional Home Audio System

Behringer Active Subwoofer Turbosound Woofer 3000W Class D Amplifier B1800XP Black 18"

Nobsound MAX Mini Bluetooth HIFI Digital Power Amplifier for Home Car Marine 100W X2 Active Subwoofer Wireless Audio Receiver MAX DC19V Power Adapter

Edifier R1280DBs Bluetooth Speaker PC Active Speaker Powered Bookshelf Speaker 4 Inch Woofer Subwoofer 42W Studio Monitor PC Speaker for Theater Input

Edifier R1280Ts Active Bookshelf Speaker Subwoofer Output Amplifier Driver Rated Output 2 Way Dual RCA Knob Control or Remote Wood Grain MDF for Port,

Edifier D12 Bookshelf Speaker Bluetooth Small Wooden Integrated Desktop 70W Active with Amplifier 2 X Woofer and 2 X AUX Subwoofer Knob or Remote

Direct Edifier R1850DB Bookshelf Speaker PC Speaker Equipped with Subwoofer 70W Wooden Monitor Speaker Active Speaker with Remote Control Amplifier

AIYIMA S400 100W Bookshelf Active Speaker Dual Mode 3 Inch Bluetooth USB DAC HiFi Home Subwoofer Music System for TV Computer

Edifier R1700BTs Active Bookshelf Speaker Bluetooth 66W RMS Amplifier Inch Tweeter and 4 Inch Bluetooth aptX Subwoofer Output Set of Reddish Brown