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12 inch 300W professional powerful active audio subwoofer for home theater with auto standby function - AliExpress
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Monitor Audio Silver W-12 (High Gloss Black) Powered subwoofer with auto room correction at Crutchfield
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Amazon.com: Kanto YU4GT Powered Speakers with Bluetooth and Built-in Phono Preamp | Auto Standby and Startup | Remote Included | 140W Peak Power | Pair | Gloss Teal : Electronics
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