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Why Does Tube Amplifier Sounds So Natural

The basic difference between a normal solid state and tube amplification is where solid state uses transistor to amplify the sound, tube amp uses vaccum tube that modulate the signal. 

Tube_amplifier_curcuit_board

In 1906, Lee De Forest invented the "audion," a triode vacuum tube capable of amplifying electrical signals. At early stage of invention it was use for Radio technology. 

There are different types of valves. We will talk about the mechanism of triodes which is use for guitar amplification. In addition to triodes, other common vacuum tube types include pentodes, diodes and tetrodes. 

Tube_amplifier_mechanism

A tube amplifier is made of vaccum tube and also called valve which is encased in a glass envelope. It's core components are - a cathode, annode / plate and at least one control grid. The cathode emits electrons when heated, which are then controlled by the grid and collected by the anode. 

Parts_of_vaccum_tube

The main process starts with a tiny light bulb type filament inside the vacuum. When electricity flows through filament, it heats up the nearest element known as "cathode" which takes the negative charges or weak AC signals.

Glowing_tube_amplifier

The middle part between "cathode" and "annode" is a spiral wire type grid, also known as "control grid" which takes up the negative charges from cathode then reduces the negative electrons and send the positive electrons to the third element annode or a metal plate to modulate a strong AC signal. 

Tube_amplifier_sound

Thats how a tube amplifier creates a non linear harmonic distortion type sound with warming, more natural in depth and much louder than a normal solid state amplifier.

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