Comfort is the top priority for earplugs. To make the HS18 earplugs particularly light and comfortable to wear, the FiiO development team has designed the HS18 silicone earplugs to be just 0.4 mm thick. In addition, the earplugs are made of high-quality, medical-grade silicone, which is highly pure and very transparent, so that they leave a pleasant feeling in the ear even during long listening sessions. Earplugs also contribute to better sound quality.

The HS18 earplugs therefore have an earpiece sound nozzle that is the same size as the sound tube of the earphones. This minimises sound barriers between the earphone and the eardrum as well as unwanted resonances generated by the sound opening of the earpiece. The result is the reproduction of the originally intended sound, which actually reaches the listener's ears. The scope of delivery includes two sets of HS18 earplugs in sizes S, M and L, so you receive a total of 12 individual earplugs. The compatible sound tube size is 5.0 mm to 6.5 mm and the HS18s are compatible with all FiiO earphones as well as many earphones from other brands.