Maxxsonics USA, Inc. is a manufacturer of home

Home audio

Home audio, essentially, refers to any audio electronics intended for home use, such as shelf stereos and surround sound receivers, which are becoming the most popular piece of home audio equipment...

 and mobile audio equipment which was founded in 2001. They are over the brand names Hifonics, Autotek, MB Quart and Crunch. MB Quart Entertainment was a separate German company which Maxxsonics acquired in 2005. Also in 2005, Maxxsonics bought the California-based company Autotek.

XX Maxximus

A Class D amplifier under their Hifonics brand rated at 10,000 watts RMS

Root mean square

In mathematics, the root mean square , also known as the quadratic mean, is a statistical measure of the magnitude of a varying quantity. It is especially useful when variates are positive and negative, e.g., sinusoids...

 when bridged into 2 ohm

Ohm

The ohm is the SI unit of electrical resistance, named after German physicist Georg Simon Ohm.- Definition :The ohm is defined as a resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere,...

s. Like many other models, this amp is actually two amplifiers in one heat sink

Heat sink

A heat sink is a term for a component or assembly that transfers heat generated within a solid material to a fluid medium, such as air or a liquid. Examples of heat sinks are the heat exchangers used in refrigeration and air conditioning systems and the radiator in a car...

; a similar Hifonics amp was banned from an audio drag

DB drag racing

dB drag racing is a competition rewarding the person who can produce the loudest sound inside a vehicle. The "dB" means decibels of sound pressure level . In these competitions, Sound Pressure Level of 155 dB can be reached, and it is not unheard of to see more than 160 dB as well...

for this reason.