Developed upon the same strong foundation of high accuracy and natural well-balanced frequency response of the SRH840, the new SRH840A Professional Monitoring Headphones are optimized for critical listening and studio monitoring. A precisely tailored frequency response and 40mm neodymium dynamic drivers deliver rich bass, clear mid-range and extended highs. A wide, padded headband and collapsible design combine with Shure durability to provide the ultimate listening experience. Includes threaded 1/4" (6.3 mm) gold-plated adapter and carrying bag.