FIIO FH5s Hybrid In Ear Monitors BLACK

Acoustic Design: 12 mm beryllium-plated diaphragm + low-frequency dynamic driver with polyurethane seal, this driver is capable of some seriously deep and powerful but controlled bass. 【6mm Beryllium-Plated Mid-Frequency Dynamic Driver】 Enhanced sensitivity, smoother consistency and less distortion -- Proven Knowles TWFK-30017 high-frequency balanced armature, lush, clean and pleasant vocals and exquisite highs 【Semi-open back cavity design】 Quickly relieves air pressure on the ear - leading to more comfortable and longer listening sessions 【3 Sound Adjustment Switches, 8 Sounds Possible】Using the electronic crossover technology of the FH5s allows you to adjust the sound exactly as you want with 3 sound adjustment switches. Setting the impedance, bass, midrange and treble depends on the music you listen to or your preferences Rotating Lock Interchangeable Plug: The Twist Lock interchangeable plug allows you to switch between 2.5mm/3.5mm/4.4mm heads to cover a wide range of scenarios.