The class-E amplifier is a highly efficient tuned switching power amplifier used at radio frequencies. It uses a single-pole switching element and a tuned reactive network between the switch and the load.

The Class-E amplifier works in switched mode — the transistor is driven hard enough to saturate in order to act as a switch with two discrete states, ON and OFF. The circuit operation is determined by the transistor when it is ON and by the transient response of the load network when the transistor is OFF.

Audio amplifier ICs (integrated circuits) are devices used within electronic circuits for audio applications. Audio amplifiers increase, control and amplify the strength or amplitude of the signals. They are used to increase the sound and quality of the audio signal.

Class A design is the least efficient but has the highest sound fidelity. Class B design is a little more efficient, but full of distortion. Class AB design offers power efficiency and good sound. Class D design has the highest efficiency but isn’t quite as high-fidelity.

Although amplifiers are sometimes classified according to input and output parameters (we’ll get to that), there are 4 basic types, which are: Current Amplifier: As the name suggests, an amplifier that makes the given input current higher. It is characterized by a low input impedance and high output impedance.

The class with the most efficiency. Class D amplifiers are known to have the greatest level of efficiency due to their design. Oftentimes, they can reach around 90% efficiency and above, depending on the situation. When compared to the class A amplifier, that’s a lot more efficiency that can be offered.

The best amplifier to buy is the QSC GX3 300-Watt Power Amplifier. This amp delivers a powerful performance far beyond your expectations. The positive features outweigh the few drawbacks so you’re assured of quality.

Class E transmitters are high efficiency, reliable, solid-state transmitters. They are simpler to build than similar transmitters using vacuum tubes, and are significantly less expensive to both build and to operate.

The Class of an amplifier refers to the design of the circuitry within the amp. For audio amplifiers , the Class of amp refers to the output stage of the amp (in practice there may be several classes of signal level amplifier within a single unit). There are many classes used for audio amps.