As a closed-style headphone, the beyerdynamic DT 660 attenuates ambient noise so effectively that outside distractions are almost completely blocked out. As a result, wearers can enjoy their favorite music in noisy surroundings such as city buses or noisy cafes. More importantly, the DT 660's extremely strong neodymium magnet system offers a detailed audio reproduction and powerful bass response, making it suitable for soul, funk, hip-hop, house, rock, techno, and more. The headphones also offer computer-calculated 90-degree swiveling ear cups for precision sound, along with a rugged headband and soft replaceable ear pads for all-day comfort. And as a bonus, the headphones fold up into a compact footprint, making them easy to store and transport. Other details include 32-ohm impedance, a single-sided 3-meter connecting cable, a gold-plated 1/8-inch stereo jack plug, and a 1/4-inch adapter. The DT 660s, which weigh 12.3 ounces, carry a two-year warranty on parts and labor.