Check the listing for details. Behringer Omega Retro-style Open-back Headphones. Color: Black, Condition: New. Listed at 64.90 USD. Try These Cans on for Size Behringer’s Omega open-back circumaural headphones have hit stardom status among accomplished studio professionals at Sweetwater. For starters, these industry-grade cans house neodymium 53mm drivers, delivering balanced audio clarity at a formidable 10Hz–28kHz frequency response. Moreover, extended device optimization ensures you’ll be able to garner high-definition playback from nearly any device. As a result, they’re an excellent option for casual music fans, gamers, production artists, and more! Omega headphones feature an open-back design for a more authentic overall output, getting you as close to your output as possible with crystal-clear audio accuracy. Decked out with vintage flair, these ’phones also come with a detachable audio cable, 3.5 to 6.