Fosi Audio IM4
 | Expecting restock Features: monitor; Design: in-ear; Connection type: wired; mini-Jack (3.5 mm); Cable supply: double-sided; Impedance (Ohm): 21; Frequency range (Hz): 20 – 20000; Sensitivity (dB): 109; Speaker size (mm): 10; |
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Fosi Audio IM4
Type:in-ear
Connection:3.5 mm
Frequencies:20 – 20000 Hz
Sensitivity:109 dB
All specifications
Specifications IM4
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E-Catalog UK editor, Headphones
Olexandr Cherkashche…, edited 28.04.2026
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Everything You Need to Know About Headphones: A Complete Technical GuideThe choice begins with understanding the design and features.
What characteristics should good headphones have?Guide to key features of headphones
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