AKG N400 Review: Ranked #3 of 668

Last updated: October 13, 2026

The AKG N400 ranks #3 out of 668 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: AKG

Prices on this page were last checked October 12, 2026 at 4:13 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

As an eBay Partner, we may be compensated if you make a purchase.

AKG N400 - ranked #3 of 668 In-Ear Headphones · Editor's rating 4.9/5

#3 AKG N400 TWS Discontinued eBay

Pros: Measured response gives it an excellent Harman preference score of 89 with a 0.93 dB spread, and its mids sit within about 1.1 dB of target, so vocals and instruments sound natural. Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. It uses 1 x 8.2mm dynamic with an easy 16 ohm load.

Cons: Discontinued, so it is mainly found used. A 6.4 dB peak near 10.8 kHz can make cymbals and sibilance sound sharp.

ReleasedMar 2020 (6 years ago)
ConnectionTrue wireless
Deviation From Target0.93 dB standard deviation
Driver TypeDynamic
Drivers1 x 8.2mm dynamic
Form FactorIn-ear
Frequency Response10Hz - 20kHz
Harman Preference Score89 (measured by oratory1990, via AutoEQ)
Impedance16 ohms
Sensitivity96 dB/mW
Sub-bass ExtensionWithin 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz)
Tonal Tilt-0.11 (negative is warmer, positive brighter)
EQ preset to match the Harman target

Set a preamp of -2.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

FilterFrequencyGainQ
Low shelf105 Hz+1.3 dB0.70
Peak9,647 Hz-2.1 dB0.92
Peak37 Hz-2.7 dB0.75
Peak2,137 Hz+0.8 dB0.35
Peak3,211 Hz-1.4 dB2.97
High shelf10,000 Hz+2.7 dB0.70
Peak5,956 Hz-1.9 dB6.00
Peak5,095 Hz+1.1 dB4.82
Peak167 Hz-0.7 dB3.95
Peak63 Hz+0.2 dB2.34

More AKG headphones →