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basically it all boils down to efficency and power output.
class A is high unefficent
class b is a bit better
class a/b is the best of both worlds and is what most amps are
class d is mainly used for sub woofers and is really effiecent
class t is most efficent and is pretty rare...
theres more of s technical thing to it, but this is the basics...
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.