Headphone buyers: Here's what you need to know about low- vs. high-impedance models - CNET
Low Impedance Headphones to High Impedance,Headphones Audio Impedance Converter | eBay
audio - How do PC sound cards cope with headsets of different impedance? - Electrical Engineering Stack Exchange
Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")
Phones & Ohms
Headphone Impedance And Sensitivity Explained | The Master Switch
How does an amplifier's output impedance affect the sound of headphones? - Quora
Output impedances effect explained : r/headphones
Headphone outputs : lots of measurments and one ABX | Headphone Reviews and Discussion - Head-Fi.org
Why do headphones generally have a much higher impedance than room speakers? - Quora
Headphones & Amplifiers - Output impedance, load impedance and frequency response
What is Impedance in Headphones - Hammeronline.in
Understanding Impedance and Why it Matters!
Archimago's Musings: MEASUREMENTS / MUSINGS: Headphone impedance, sensitivity, efficiency, and amplifier output impedance. (And a quick thought on Darko's "All You Need Is...")
Phones & Ohms
Headphone impedance explained | Bax Music Blog
Headphones Ohms Ratings Explained - zZounds Music Blog
Ohms, Impedance, & Headphones: What the Ω is going on?
Headphone Impedance Guide
What is impedance in headphones? | LEWITT
