Headphone buyers: Here's what you need to know about low- vs. high-impedance models - CNET
Beyerdynamic DT770 Pro Limited Edition 32 Ohm | Headphone Reviews and Discussion - Head-Fi.org
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How to explain Ohm like I'm 8. The HD800s is 300 Ohm. The Spirit Torino Super is 32 Ohm. Same pricing at $1600. What does it mean with different Ohms? : r/headphones
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80 ohm vs 250 ohm: What's The Difference? - Audioviser
A Comparison of Beyerdynamic DT 880 32 ohm, DT 880 250 ohm, and DT 880 600 ohm Headphones Page 2 | Stereophile.com
Headphone impedance explained | Bax Music Blog
Amazon.com: beyerdynamic DT 770 PRO 250 Ohm Over-Ear Studio Headphones in Black. Closed Construction, Wired for Studio use, Ideal for Mixing in The Studio : Musical Instruments
Headphone Impedance Demystified: Do I Need a Headphone Amp? - Headphonesty
A Comparison of Beyerdynamic DT 880 32 ohm, DT 880 250 ohm, and DT 880 600 ohm Headphones | Stereophile.com