2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. Other Classes: You may see classes such as GH, bD, X, FD, etc. These amps are most commonly used to drive subwoofers. Nickel plated high temperature impact resistant that allow for secure connections and is erosion resistant. Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. Hifonics ZEUS DELTA four channel amplifier delivers 1350 watts that features PWM MOSFET power supply for maximum current levels. These amps are most commonly used to drive speakers.Ĭlass D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. Class A/B has great sound quality but is not as efficient as class D. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion.
Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.Ĭlass A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”.
An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude.
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