NF Audio NE4 Evolution – With Adjustable Frequency Crossover

NF Audio NE4 Evolution comes with a revolutionary change in switching between different sound tunings with an IEM. NE4 Evolution brings different pairs of face covers. These face covers have tech built inside of them that affects the frequency crossovers for the pair.

NE4 Evolution’s frequency divider or frequency crossovers are the core tuning component of multi-driver earphones. Different circuit architectures and parameters enable the driver units to work at different frequencies with different powers and an option to adjust them can bring drastic changes to the sound tuning. NE4 brings the user a way to adjust this crossover with the four drivers with replaceable faceplates.

NF Audio has used the widely known Knowles Balanced Armature drivers for their latest IEM. NE4 Evolution has a combination of Knowles 22955+29689+31736 (Composite) drivers covering a wide frequency band.  genres of music.

NF Audio NE4 Evolution comes packed with three sets of different face covers, Red, Black, and Blue. All three of these offer changes in the frequency crossover for the drivers in the pair. The red face cover is for Pop music where bass extensions are required to make the output fun and lively. It adopts a three-way frequency division with one BA unit for low, one BA unit for mids, and two BA units for high-frequencies.

The Black faceplates for reference sound with a three-way architecture with one BA for ultra-lows, one BA for a full-frequency response, and two BA for high-frequencies.

The Blue filter is for transparent sound with a two-way architecture, one driver for full-frequency response and two for high-frequency drivers. This third filter utilizes only three drivers with the pair. The connectors on the faceplates are sturdy and have a solid build with gold-plating for firm connection.

The NE4 Evolution is launched at 749$.

Specs

Driver Configuration: 4 Knowles BA driver.

Sound insulation: 25dB.

Distortion: <1%.

Termination plug: 3.5mm.

Pop Faceplate(Red):-

Frequency Response: 9Hz-20kHz.

Sensitivity: 104dB/mW.

Impedance: 6Ω.

Reference Faceplate(Black):-

Frequency Response: 18Hz-22kHz.

Sensitivity:108dB/mW.

Impedance: 10Ω.

Transparent Faceplate(Blue):-

Frequency Response: 20Hz-30kHz.

Sensitivity: 110dB/mW.

Impedance: 22Ω.