Jim Marshall crafted guitar amplifier masterpieces without the assistance of computers, software or the Internet... In 1963 "graphical methods" meant drawing Bode plots with a pencil and ruler... Times have changed. ● Master the basics ● Design your amp ● Know it works Amp Design for the 21st Century

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What does this calculator do?

guitar amp resistor

Noise is an important consideration in preamp design, particularly in the first stage. Thermal noise is generated by the individual movements of electrons in the preamp's resistors. The calculator computes the RMS thermal noise voltage based on the resistor value, its temperature, and the audio frequency bandwidth. It assumes the resistor is in thermal equilibrium, thereby maintaining a constant temperature.