Valve amplifiers or valvular amplifiers, also called bulb or tube amplifiers, have many unconditional followers for their superb sound quality and customization possibilities by changing the valves. There are scientific studies that prove that the sound of valves is more harmonic than that which provides one to transistors. Therefore, between valves vs. transistors, in terms of sound, it gains the valves, though not by KO.
And how does a valve amplifier work? For inside an empty glass vessel, there is an anode, cathode and a grid. The input signal heats the cathode, which transfers the electrons to the direction of the anode, (rectification), amplifying the signal.
These power amplifiers can work in class B, AB or A and can be push-pull amplifiers, single-ended, use triodes, pentodes ... ask us if you have doubts.
In short, there are many types of valves, and here you can find the most important brands of amplifiers on the market. Do not hesitate to write to us for more information on the exciting world of this kind of amplifier.