Does the class matter?

Car audio amplifiers are usually either class D or class AB. An amplifier class is based on how the amp is constructed, and how it is meant to operate.

D Class Amplifiers differ from Class A/B Amplifiers in several ways. They are made for greater efficiency, have a smaller footprint, and provide greater heat dispersion.

Space and efficiency are top concerns because of how they affect sound quality and sound pressure levels. So the amplifier class matters when you’re deciding between sound quality and sound pressure level.

Class D Amps are “Switching Amplifiers”

In switching amps like Class D, the amplifying circuit, or MOSFET, rapidly switches on and off while the amp is operating.

MOSFETs have the lowest resistance when they are fully on and therefore operate with great efficacy.

Class D Compared to Class AB

Compared to Class A and Class B amps, Class D’s low energetic losses allow for the use of a smaller physical heat sink, permitting for smaller and lighter amps. This translates to more efficient performance, greater enjoyment of your music, and less hassle to play that music.

Class D boasts between 85-95% efficiency. Class A/B Amplifiers lose upwards of 35% of their energy as a result of biasing and operation.

Class D amplifiers are usually smaller than a comparable class AB amplifier. Because less heat builds up in a class D amp, they can use smaller heat sink.

There is a massive amount of efficiency gained by using a Class D Monoblock Amplifier like the Q1-2200.2 Monoblock Amplifier over Class A/B Amplifiers.

When size, efficiency, and operating temperatures matter, opt for Class D Amplifiers. SoundQubed offers a stellar selection of Class D Monoblock Amps with an affordable S Series line for daily drivers and a Q Series line for competitive bassheads.

Learn more about monoblock amplifiers here.

In our next article, we’ll discuss the benefits of Class AB Amplifiers.