The Over Ear Studio Headphones with Closed Back Design, HDH40 from M-audio are designed for studio use, with a frequency range of 15 Hz to 28 kHz and a sensitivity of 95 dB. These headphones feature a flexible headband, comfortable ear cushions, and a 3.5mm jack connector for easy compatibility with music production equipment, laptops, desktops, gaming consoles, and smartphones. With a sleek black design and volume control, these headphones offer a high-quality audio experience for adults in the music industry. Made of stainless steel, these headphones weigh 9.6 ounces and come with a retractable cable for convenience.