32 ohm vs 250 ohm - Which Headphones Sound Best? - YouTube
Beyerdynamic DT 770 PRO 32/80/250 Ohm Over-Ear Studio Headphones. Enclosed Design, Wired for Professional Sound in The Studio and on Mobile Devices Such as Tablets and Smartphones Wooden Headphone Holder (DT-770 /
Beyerdynamic dt990 32 ohm vs 250 ohm? | Headphone Reviews and Discussion - Head-Fi.org