Sound Storm Laboratories is a multi-million dollar full-line car audio manufacturer.Sound Storm was established in 1997 by a group of car audio professionals whose goal was to bring exciting product designs to the mobile electronics market at affordable prices. This ¿more-bang-for-the-buck¿ philosophy was incorporated into every aspect of the company. The 4F400 four channel amplifier kicks out an impressive 400 watts of maximum power. The built in variable low pass crossover and variable input gain control allows you to tune your bass just how you like it. For high quality product at an affordable price, give SoundStrorm a try!