Knowles™ balanced armature drivers

Featuring the latest generation of balanced armature drivers, the HEM series can reach frequencies as high as 40,000Hz — twice the frequency range of other balanced armature IEMs. Each HEM model houses either four (HEM8), three (HEM6), two (HEM4), or one (HEM6) Knowles balanced armature drivers in each earbud — designed to produce pure, authentic sound from a compact body.