Sennheiser's HD 300 PRO monitoring headphones have a closed-back, circumaural sound-isolating design. They have a frequency response of 6 Hz to 25 kHz and will provide clear and high-quality audio reproduction. Furthermore, they offer up to 32 dB of passive noise reduction which make them perfect for mixing and a range of other pro-audio roles. There are dynamic drivers within that feature a linear frequency response that's present throughout the entire spectrum and they're designed to be distortion-free even when SPL is pushed to 123dB. When it comes wearing the headphones, they're designed so that you can wear there for long periods of times without discomfort. This is thanks to the viscoelastic earpads and the isolation of acoustic drivers within which bolster passive noise.