Headphone Power Calculator
Music & AudioCalculates the electrical power, voltage, and current needed to drive headphones to a target loudness, and whether an amplifier is recommended.
Power Required (mW)
The power needed to reach your desired loudness.
Voltage Required (V)
3.88
The voltage needed from the amplifier or source.
Current Required (mA)
6.47
The current needed from the amplifier or source.
Recommended Max Amp Output Impedance (ohms)
75.0
For accurate sound, an amplifier output impedance should stay below this value (the standard 1/8th damping-factor rule).
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Odeh Ahwal0people find this calculator helpful
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Music & Audio calculators
Frequently Asked Questions
How is required power calculated?
Power (mW) = 10 raised to the power of ((Desired Loudness - Sensitivity) / 10), the standard decibel-to-power conversion. Voltage and current are then derived from that power using the headphone impedance.
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