Elac Sub3030 12 Inch 1000w Powered Subwoofer With App Control/auto Eq (black) : Target
Dayton Audio DTA-100LF Desktop Subwoofer Amplifier with EQ
Sunfire True Subwoofer EQ Sub w/Calibration Mic - Featuring Dual 12" D – SkyFi Audio
Hot New 1 Pc Small Auto Car Audio Regulator Amplifier Bass Subwoofer Stereo Equalizer Controller 4 RCA Vehicle Car Accessories|Stereo Amplifiers| - AliExpress