Bringing Musical Fidelity design expertise, world-class engineering, and outstanding sound quality to portable audio was an immense challenge. But Musical Fidelity was ideally placed to deliver on that challenge, and the results are Musical Fidelity headphones. Ideal for those who travel but also like to listen at home, Musical Fidelity headphones are designed to help music lovers enjoy their favorite tunes anywhere. The MF-100's were designed to make a beautiful lifelike sound. You can hear the artist's creation as it was intended to be. They are light, comfortable and durable. Long listening sessions are a pleasure. The MF-100's drive units were designed from the ground up to give a flat and wide frequency response with low distortion. This gives a completely natural, stress-free sound. The drivers are 41mm Dynamic Type and boast a frequency response of 20 Hz ~ 20 kHz. The earpads are a subtle combination of fine materials and refined design. The leather earpads are designed for maximum comfort (a spare pair of extra comfortable Alcantara pads are included). At the same time, they give excellent sound isolation. Your music doesn't disturb anybody and vice versa. The ergonomically designed earpad forms an excellent seal, which ensures deep powerful and clear bass. Specially designed transparent fabric has been used for the center of the earpad (covering the drive unit). Using your MF-100 with your smartphone? Built into the headphone cable is an in-line iDevice control, including a microphone and button for taking calls. Every part of the MF-100 is made of high quality materials which enhance the durability, tactile sensations and sound quality. Musical Fidelity's award winning design team identified and focused on several critical areas to achieve its aims of natural lifelike sound, lightness and comfort, and durability.