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Wired in-ear headphones FiiO JF11 — 20–20,000 Hz, 1.2 m cable, black
The FiiO JF11 wired in-ear headphones combine a large 14.2 mm dynamic driver and a lightweight, compact housing to deliver clear, natural sound for everyday listening. With intraaural ear coupling, a frequency response of 20–20,000 Hz and a fixed 1.2 m cable, these wired headphones are designed for reliable connection to portable players, smartphones with a 3.5 mm jack, and desktop sources. The compact 14.5 g design minimizes pressure on the ear and allows comfortable long-wearing, including when lying on your side.
The 14.2 mm long-stroke dynamic driver with a polyester fiber polymer composite diaphragm provides low distortion, good rigidity and controlled damping for clear mids and extended bass. A U-shaped acoustic tube is implemented to reduce cavity resonance and extend low-frequency response, producing deeper bass without overwhelming the rest of the spectrum. The fixed 1.2 m cable ensures a consistent wired connection while the lightweight, low-profile housing enhances comfort and portability.
Connect the 3.5 mm plug securely to your audio source and insert the in-ear shells gently into the ear canal for a stable fit and best acoustic seal. Rotate or adjust the ear tips slightly to find a comfortable position that minimizes external noise and improves bass response. Use moderate volume levels to protect hearing and avoid prolonged exposure to high sound pressure. After use, store the headphones in a dry place and avoid sharp bends in the fixed cable to prolong service life.
For balanced sound and extended bass, pair the FiiO JF11 with devices that offer a neutral or slightly warm headphone output. Choose appropriately sized silicone or foam ear tips to improve seal and comfort, and maintain moderate listening levels to preserve both headphone components and hearing.
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