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 12" Motor Group
Price: £899.99
Hertz SPL Monster 15" Motor Group
Price: £799.99
Hertz SPL Monster 15" Street Bass Mobile Group
Price: £399.99
