The Mackie MCK-2049400-00 refers to the specific product number for the Mackie MC-150, a pair of professional closed-back, over-ear headphones designed for critical audio monitoring in studio and live sound environments. These headphones are engineered to deliver accurate, detailed sound reproduction with a focus on clarity and a flat frequency response, making them suitable for mixing, mastering, tracking, and broadcast applications. The MC-150 utilizes large 50mm dynamic drivers that provide a wide frequency range with precise imaging, allowing engineers and musicians to make informed decisions about tonal balance, effects, and spatial placement within a mix. The closed-back design is crucial for providing substantial passive noise isolation, which helps prevent microphone bleed during recording sessions and allows for focused listening in noisy control rooms or on stage.

Comfort during extended use is a key design priority. The headphones feature plush, circumaural earcups made from memory foam and covered in soft protein leather, creating a comfortable seal around the ears that minimizes fatigue. The adjustable, padded headband ensures an even weight distribution and a secure fit for various head sizes. Practical features include 90-degree swiveling earcups that facilitate one-ear monitoring and a foldable construction for compact storage and transport. The detachable cable is a coiled, professional-grade oxygen-free copper (OFC) design that extends to a significant length for freedom of movement and retracts for easy management. It terminates in a robust 1/4-inch TRS plug, with an included screw-on 1/8-inch adapter for use with portable devices.

Built to meet the rigorous demands of professional use, the MC-150 combines durable materials with reliable performance. The robust construction includes reinforced stress points at the headband and cable connections to enhance longevity. By offering a blend of accurate sonic performance, effective noise isolation, long-wearing comfort, and practical functionality, the Mackie MC-150 serves as a dependable tool for audio professionals who require trustworthy reference headphones for critical listening across a diverse range of production and performance settings.