Two types of silicon are being used in E Type earpieces, harder silicon with grooves is being used in the middle to support the tube, and softer silicon is being used in the outside. This helps to improve sound isolation and comfort
To fit with the ear canal of various users, Final has launched 5 sizes to fit with users' needs. A pair of good fit earpiece will bring more comfort, and will allow the earphone to be placed closer to the eardrum.
If the earphone is placed close to eardrum (yellow curve), bass performance will improve, and making high pitches more smooth