Category: Amplifiers

Guitar Amplifiers and Cabinets

Let’s start with the basics. A guitar amplifier is a device that amplifies the signal. It’s a unit that is capable of strengthening an audio signal that is provided from an electric guitar, an acoustic guitar or bass guitar. After that, an altered signal is sent through a loudspeaker that is generally inside a cabinet.…
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Amplifier

An amplifier, also known as an electronic amplifier or amp, is an electronic device that is able to increase the power of a signal. This signal varies in time, voltage or current. An amp is an electronic circuit that has two ports and it uses electric power that is generated from a power supply in…
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Class A Amplifier

The Class A amplifier is the simplest form of a power amp because, in order to produce an inverted output, it uses a single switching transistor in its standard configuration. Since the transistor is always ON, it is able to conduct during the complete cycle of the input signal waveform. The Class A amplifier configuration…
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Class B Amplifier

When in an inactive state, the Class B amplifier has many advantages over the Class A amp because no current flows through the transistors. Neither the output transistors nor the transformers dissipate any power when the signal is OFF. On the other hand, Class A amps require a substantial amount of base bias, so, it…
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Class AB Amplifier

A Class AB amplifier is a combination of Class A and Class B type amps and it’s also a variation of a Class B amplifier. Both Class A and Class B amps conduct at the same time around the waveform’s crossover point, removing the crossover distortion conflicts of the former Class B amplifier. The Class…
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Class G/H Amplifier

A Class G/H amplifier is used interchangeably to refer to different designs that boost Class AB output stages. The terms vary from one manufacturer to another. These devices are commonly used in large audio amplifiers and have effective techniques that allow them to achieve greater efficiency with low distortion.  Class G amplifiers use rail switching…
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Class D Amplifier

A Class D amplifier, also known as a switching amplifier, is an electronic amp in which the transistors operate as electronic switches. These transistors are usually MOSFETs and operate by switching back and forth between the supply rails. These transistors are fed by a modulator using diverse techniques that encode the audio input into a…
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Class T Amplifier

A Class T amplifier is an audio amplifier IC design and it is a registered trademark for Tripath’s amplifier technologies. This kind of amplifier has control signals that can be calculated using either digital signal processing or fully analogue techniques. Covered products tend to use a Class D amp that produces a better performance than…
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Amplifier Class XD

The Amplifier Class XD has a British patent that is owned by Cambridge Audio. The term XD comes from Crossover Displacement, so this amplifier is based on a Crossover Displacement Technology which removes a certain amount of distortion without collateral compromises. This kind of technology first appeared, many years ago, in the Azur 840A integrated…
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Vacuum Tubes Guitar Amplifier

Vacuum tubes were fairly common before the solid-state semiconductors appeared. Vacuum tubes conquered the active electronic components in most instrument amplifier applications. Solid-state semiconductors, also known as transistor amps, took over since they are more affordable, easier to build and require less maintenance. These amplifiers are heat and shock-resistant, so they are able to reduce…
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