Massive Audio Amplifier E3F - 1,500 Watts RMS x 1 @ 1 Ohm Full Range Mono Block Amplifier
Amazon.com: beyerdynamic DT 770 PRO 80 Ohm Over-Ear Studio Headphones in Gray. Enclosed design, wired for professional recording and monitoring : Musical Instruments
Beyerdynamic DT 250 80 ohm Closed-back Broadcast and Studio Headphones | Sweetwater
What Does Ohm & Impedance Mean In Earphones/headphones?