Bias Calculator

Based on the chosen parameters, the calculator will determine the appropriate bias current for the tube amplifier.

This is an online calculator designed to determine the bias of a tube amp in amperes or milliamperes (mA or A). Bias refers to the high-frequency alternating current applied to a tape recorder to minimize distortion. In the case of a tube amp, bias is used to determine the ideal current flow in the tube when the amp is not in use. By inputting the amplifier’s class type, plate dissipation, tube type, and plate voltage into this bias calculator, you can determine the current.

Amplifier Class Type
Plate Dissipation
Plate Dissipation
Tube Type
Plate Voltage
volts
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    This tube amp bias calculator allows you to select the tube type and amplifier class type (AB or A) to calculate the current. Based on the chosen parameters, the calculator will determine the appropriate bias current for the tube amplifier.