Tools • Power Match

Can your source drive these headphones?

Amp anxiety is mostly solvable with arithmetic. This calculator converts a headphone's published sensitivity and impedance into the peak loudness your source can actually deliver, flags output-impedance mismatches, and shows every formula it used. No "you need a better amp" hand-waving. Source specs are approximate published figures, rounded conservatively.

Headphone or IEM

Pick a product (optional)

Sensitivity

Unit

Impedance (Ω)

Source

Device

0.50 Vrms max · 1.00 Ω output impedance. Approximate published spec for phones that still have a headphone jack; many manage less. Conservative composite, not a specific model.

Enter a sensitivity and impedance (or pick a product), then choose a source to see the verdict.

New to these terms? Read sensitivity vs impedance and the Zout/8 damping rule, or browse all the measurement-literacy explainers.