Earthquake Sound was founded in 1985 and capitalized on the budding home theater movement by producing some of the highest output, low frequency response subwoofers on the market
Eventually Earthquake Sound produced a complete line of amplifiers and loudspeakers.
Notable Earthquake Sound products include:
Earthquake Sound Cinenova Grade amplifier, rated at 300 watts per channel
Earthquake Sound Supernova subwoofer
Earthquake Sound Q10B tactile transducer
Earthquake also sells a line of car audio gear.