Fosi Audio IM4
In-Ear Monitors IEM Dynamic Ø10mm 21 Ohm 109dB 20Hz-20kHz
With the IM4, FOSI Audio unveils its first dynamic in-ear monitors. These feature a 10mm diameter diaphragm, dual N52 magnet arrays, and a dual acoustic cavity for balanced sound reproduction. Their 21-ohm impedance coupled with 109dB sensitivity makes the IM4 easy to drive for a high level of compatibility. Many components are interchangeable, allowing users to change the sound output, such as aluminum and brass nozzles and different in-ear tips. In addition, there is a detachable audiophile cable made of silver-plated 5N OFC copper conductors with 0.78mm CIEM connectors to a gold-plated 3.5mm jack termination.
Fosi Audio IM4: Audiophile design
10mm Beryllium Diaphragm
This diaphragm delivers smooth midrange and deep bass. Its beryllium coating provides clear, balanced high frequencies.
N52 dual magnet system
The N52 dual magnet system delivers superior dynamics and crystal-clear sound.
Dual acoustic chamber design
The front acoustic chamber ensures balance between different frequencies, while the rear acoustic chamber extends the high frequencies and the level of detail in the overall sound.
Detachable silver-plated OFC cable
The IM4's detachable cable is made from four silver-plated 5N OFC copper conductors for flawless signal transmission and protection.
Fosi Audio IM4: Comfortable earphones
The CNC-machined anodized aluminum shell of the IM4 is very sturdy. Moreover, weighing only 7g per earphone and offering excellent sound quality, they allow you to enjoy long listening sessions without any discomfort.
Technical characteristics
| Specifications | |
|---|---|
| Product type | In-ear monitors |
| Driver | Dynamic |
| Diaphragm diameter | Ø10mm |
| Diaphragm material | PU diaphragm and beryllium coating |
| Impedance | 21 ohm |
| Sensitivity | 109dB/mW |
| Frequency response | 20Hz-20kHz |
| Detachable cable | |
| Cable structure | 4 cores of 392 strands of silver-plated 5N OFC copper |
| Earphone connectors | 0.78mm CIEM |
| Cable terminaision | 3.5mm jack |
| General | |
|---|---|
| Weight | 7g/earbuds 38g: IEM + cable |
| Color | Black |
| Package | 1x Pair of Fosi Audio IM4 earphones 1x Detachable cable with 0.78mm CIEM connectors to 3.5mm jack termination 2x Pair of nozzles (1x aluminum and 1x brass) 9x Pair of ear tips |
