The 50 mm speaker delivers full-range audio with epic dynamics and ideal for tracking and mixing. The audio reproduction from OneOdio Studio Hi-Fi is highly-defined with authentic details shining dynamically above the rich mids and high-impact bass. Professional ergonomic structure design, the size of the earmuffs is larger than ordinary headphones (up to 4.5 inches, 3.5 inches wide). When worn, it is like your palm covering your ear. The earpads fit our ears perfectly. With a closed-back design, which lets you immersed in your music world, Studio Hi-Fi has a strong design concept and is well-constructed. Absolutely noise isolation & Ergonomics full-cover padding.