The Hertz SPL Monster range consists of extremely powerful amplifiers and chunky subwoofers for the ultimate in bass generation. Strictly for those who wish to show or compete, all products are truly deserving of their "SPL Monster" credentials!
Hertz SPL Monster D-Class SPL Amplifier 15,000 watts
Hertz SPL Monster 15" Motor Group
Hertz SPL Monster 15" Street Bass Mobile Group