Shure Professional Listening/DJ Heaphones, SRH Series The closed-back SRH240A headphones have a circumaural design that adds a level of comfort and background noise reduction to your personal audio experience. The wide frequency range delivers full bass and detailed highsShure offers a wide range of headphones for multiple different purposes which all build on more than 85 years of professional audio experience. Shure Professional Headphones live by a simple rule: What goes in, must come out. All Headphones are designed to withstand the rigors of everyday use, they are an excellent choice for music professionals and music obsessivesfor audiophile listening, DJing and critical reference. Shure SRH240A Professional Quality Headphones are a perfect audio upgrade with your portable digital devices. Its impedance, power handling and sensitivity are optimized especially for consumer devices. A wide frequency range delivers full bass with clear mids and highs. Its closed-back, circumaural