FIIO FH5S Silver (FIO-IEM-FH5S-S) Wired Earphones, Silver, Semi-Open Type, Acoustic Structure

2BA+2DD Architecture Achieves Even Higher Sound Quality The FH5s/FH5s Pro employs a unique 2BA+2DD architecture, featuring two balanced armature drivers for the high frequencies and one dynamic driver each for the midrange and low frequencies. The newly installed Knowles TFFK-30017 dual BA drivers enhance high-frequency reproduction, delivering a delicate and vivid sound. The mid-low range drivers also feature 6mm and 12mm dual dynamic drivers with beryllium coatings. Careful consideration has been given to phase matching between the low and midrange frequencies, covering a wider frequency range while using drivers specialized for each range to create a vast soundstage and a realistic sense of space. The unit is equipped with three tuning switches that adjust the characteristics of the low, mid, and high frequencies, allowing you to freely control the tone according to your preferences or changes in the environment. The semi-open design of the rear cavity was refined through repeated simulations to ensure uniform air pressure between the front and rear cavities, resulting in a vast soundstage, comfortable listening, and natural sound. The tri-shell sandwich structure is firmly secured at three points to the rear shell, body, and front cover, all of which are machined from aluminum-magnesium alloy using 5-axis CNC machining, significantly reducing excessive resonance and distortion. The FH5s comes with an MMCX cable featuring 120 silver-plated, high-purity single-crystal copper core wires. The player-side plug features a twist-lock mechanism that allows for interchangeable 2.5/3.5/4.4mm plugs, ensuring ideal playback regardless of the player or earphones you use.