Levesphere
Fosi Audio IM4 — Open-Back IEM
Fosi Audio IM4 — Open-Back IEM
Regular price
$121.99 USD
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$121.99 USD
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🎧 FOSI AUDIO IM4 — OPEN-BACK DYNAMIC IEM
Open air. Open sound. The natural soundstage you never knew you were missing.
⚡ KEY FEATURES
- 🔬 10mm N52 Dual-Magnet Dual-Cavity Driver — high resolution, wide dynamic range, low distortion
- 💎 PU Beryllium-Coated Diaphragm — ultra-fast transient response, pure tonal accuracy
- 🌊 Open-Back Design — natural, fatigue-free soundstage for extended listening
- 🏗️ CNC 6063 Aluminum Alloy Housing — skin-friendly, premium texture, built to last
- 🧵 4-Core 392-Strand 5N OFC Silver-Plated Cable — clean signal, low resistance
- 🔌 2-Pin 0.78mm Detachable Connector — upgradeable, universal compatibility
- ⚡ Only 7g per earbud — all-day comfort, zero fatigue
📋 SPECIFICATIONS
| Driver | 10mm N52 Dual-Magnet Dual-Cavity DD |
| Diaphragm | PU Beryllium-Coated |
| Sensitivity | 109 dB/mW |
| Impedance | 21 Ω |
| Frequency Response | 20 Hz – 20 kHz |
| Cable | 4-Core 392-Strand 5N OFC Silver-Plated |
| Connector | 2-Pin 0.78mm |
| Audio Jack | 3.5mm Gold-Plated |
| Housing | 6063 CNC Aluminum Alloy |
| Weight (per earbud) | 7g ± 0.5g |
| Weight (incl. cable) | 38g ± 1g |
| Package Includes | IEM · Detachable Cable · Eartips Set · Carrying Bag · Manual |
◈ OPEN BACK. OPEN MIND. PURE SOUND. ◈
