An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or...

An operational amplifier (often op amp or opamp) is a DC-coupled electronic voltage amplifier with a differential input, a (usually) single-ended output...

amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may...

power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier's characteristics...

A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium...

A differential amplifier is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common...

amplifier Optical amplifier Pneumatic amplifier Torque amplifier Amplifier (band), an English rock band Amplifier (Amplifier album), 2004 Amplifier (Dance Exponents...

A guitar amplifier (or amp) is an electronic device or system that strengthens the electrical signal from a pickup on an electric guitar, bass guitar...

A lock-in amplifier is a type of amplifier that can extract a signal with a known carrier wave from an extremely noisy environment. Depending on the dynamic...

An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup...