![Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...") Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")](https://1.bp.blogspot.com/-Ew3uSeR6jB8/YEVIVAm4f_I/AAAAAAAAZtQ/aTY8uIdmUHsdLmFMfruAbi81yZ5QeUinACLcBGAsYHQ/s1600/Polk%2BUltrafit%2B200%2BImpedance.jpg)
Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")
![Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...") Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")](https://1.bp.blogspot.com/-lQ_Cw0p3Q2Y/YHW-ta4p5mI/AAAAAAAAaHY/3a4gXVT93kUbXCbnKmO3-4yMozVkvToJACLcBGAsYHQ/s2048/All%2BHeadphone%2BImpedances%2BLOG%2BScale%2B-%2BLarger.png)
Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")
![Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...") Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")](https://1.bp.blogspot.com/-OXrhqoaDSqY/YFBV2rJyPeI/AAAAAAAAZys/izAYJUP5FpAX9c_lzNphLe34I0WOC2crACLcBGAsYHQ/s2000/All%2BHeadphone%2BImpedances%2B-%2BLarger.png)
Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")
![audio - How do PC sound cards cope with headsets of different impedance? - Electrical Engineering Stack Exchange audio - How do PC sound cards cope with headsets of different impedance? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/6J1Ro.png)