Listen Technologies Corporation","The DH 6021 is a comfortable, light-weight dynamic stereo headphone for conference and assistive listening applications. The headphones have soft ear pads that are easily replaceable and have a durable reinforced cable with a 90° stereo connector.
Audio-Technica U.S., Inc.","Audio-Technica's ATH-M20 dynamic stereo headphones offer exceptional clarity and maximum comfort for hours of listening. The headphones' low-profile, closed-back design provides superior isolation in high-volume listening situations. Features include: 40 mm drivers, each with a neodymium magnet structure; lightweight, adjustable cushioned headband; gold-plated stereo 1\/8\" (3.5 mm) connector with strain relief and snap-on ¼\" (6.3 mm) adapter; ultra-flexible 10\" coiled cable with single-side exit.