Description
Fosi IM4 wired earphones
The Fosi IM4 wired earphones are designed for listeners who want accurate sound reproduction with long-term comfort. Thanks to the open-back in-ear monitor design, they create a wider and more natural soundstage than typical closed earphones. As a result, music feels more spacious and realistic during everyday listening.
Precision CNC Aluminum Alloy Housing
Built with CNC-machined aluminum alloy housing, the Fosi IM4 earphones offer durability and a premium feel. Moreover, the rigid metal construction helps reduce unwanted resonance, which keeps audio clean and well-balanced. For this reason, the overall sound stays clear while the earphones remain lightweight for daily use.
Comfortable and Ergonomic Design
In addition to sound quality, comfort is a key part of the IM4 design. The ergonomic in-ear shape fits naturally and securely, making these wired earphones comfortable for extended sessions. Whether you are listening to music, watching videos, or gaming, the lightweight build helps reduce ear fatigue over time.
Dual-Magnet Dual-Cavity Dynamic Driver
At the core of the Fosi IM4 is a dual-magnet dual-cavity dynamic driver engineered for detailed and responsive sound. Consequently, bass remains controlled, mids stay clear, and highs are well-defined. This balanced tuning makes the earphones a solid choice for both casual users and audio enthusiasts.
Fosi IM4 wired earphones for music and gaming
The Fosi IM4 wired earphones work well for music playback and gaming audio, and they can also support basic monitoring needs. Furthermore, the wired connection provides stable performance without latency, battery limitations, or signal interference. This makes them reliable across different devices and usage scenarios.
Reliable Wired Performance for Everyday Use
For users who prefer consistent audio quality, wired earphones remain a dependable option. The Fosi IM4 delivers steady sound output without compression, ensuring clarity during longer listening sessions. Additionally, the open-back design supports a more natural sound flow, which can improve the overall listening experience at home or at a desk.
What’s Included in the Box
- Fosi Audio IM4 wired earphones
- Detachable audio cable
- Multiple ear tips for fit and sound tuning
- Carrying pouch
- User manual







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