Counterweight, 3.5" Length, Bronze

Bast Balance Mono Amplifier,700W RMS Continuous Power,Digital Class D Amp,1 Ohm Stable,Specifically Designed for High-Power Subwoofers

Taramps BASS 1200 1 Ohm 1 Channel Mosfet Amplifier 1200 Watts RMS, Monoblock, Crossover, Bass Boost, RCA/High Level Input, Class D, Car Audio System Monitor Level Remote Included, Great for Subwoofers

Lanzar 3000 Watt 2-Ohm Stable Monoblock Mosfet Amplifier, High-Power Car Audio Amp with Electronic Crossover Network, Bass Boost Circuit, Low Pass Filter Controls, and Nickel RCA Inputs, 13" x 2"x 9"

Taramps Smart 3 Bass 0.5 to 2 Ohms 3000 Watts RMS, Multi Impedance, 1 Channel, Amplifier for Car Subwoofer, High Power Class D, Mosfet Monoblock Digital, Smart 3k, Crossover Low Pass with Bass Boost

Car Audio Amplifier ZE1000.1 2000W Monoblock Class D MOSFET Subwoofer Audio, 1-4 Ohm Stable, Low Pass Crossover, Mosfet Power Supply, Stereo

Taramps HD 2000 1 Ohm 1 Channel 2000 Watts RMS MAX, Full Range Car Audio, Monoblock, LED Monitor Indicator, Class D Amplifier, Crossover, White 2k amp

CT Sounds CT-1000.1D Compact Class D Car Audio Monoblock Amplifier, 1000 Watts RMS

BOSS Audio Systems R1100M Monoblock Car Amplifier - 1100 High Output, 2-8 Ohm Stable, Low/High Level Inputs, Low Pass Crossover, MOSFET Power Supply