AutoEq / EqualizerAPO preset for Sennheiser HD 4.40 BT - Wireless Headphone

Generated from this product's measured frequency response (source: AutoEq · Innerfidelity), corrected toward an approximate Harman over-ear (OE 2018) target. This is an estimate - every ear and every rig differs; treat the numbers as a starting point.

Download parametric .txt Download GraphicEQ.txt AutoEq CSV (Qudelix / Wavelet)

Parametric preset (AutoEq / EqualizerAPO format)

# Sennheiser HD 4.40 BT - Wireless Headphone - AutoEq-style parametric preset (measured: AutoEq · Innerfidelity)
# AutoEq-style parametric preset - TheTuningChoice (approximate Harman over-ear (OE 2018) target; estimate, treat as a starting point)
Preamp: -6.9 dB
Filter 1: ON LSC Fc 105 Hz Gain 6.6 dB Q 0.70
Filter 2: ON PK Fc 40 Hz Gain -0.4 dB Q 2.00
Filter 3: ON PK Fc 90 Hz Gain -2.5 dB Q 1.40
Filter 4: ON PK Fc 180 Hz Gain -1.2 dB Q 1.40
Filter 5: ON PK Fc 375 Hz Gain 0.8 dB Q 1.40
Filter 6: ON PK Fc 750 Hz Gain 0.2 dB Q 1.40
Filter 7: ON PK Fc 1500 Hz Gain -0.1 dB Q 1.40
Filter 8: ON PK Fc 3000 Hz Gain 3.2 dB Q 1.40
Filter 9: ON PK Fc 6000 Hz Gain 6.6 dB Q 1.40
Filter 10: ON PK Fc 10000 Hz Gain 4.9 dB Q 2.00

GraphicEQ line (EqualizerAPO)

Preamp: -10.7 dB
GraphicEQ: 20 10.4; 27 8.0; 36 6.0; 47 4.5; 63 3.1; 84 1.8; 112 0.9; 150 -0.3; 200 -1.5; 267 -0.5; 356 1.0; 474 0.5; 632 0.7; 843 0.3; 1125 0.4; 1500 1.0; 2000 1.5; 2667 2.4; 3557 5.7; 4743 4.8; 6325 7.4; 8434 6.2; 11247 4.8; 14998 7.9; 20000 6.8

CSV band table (phone-app EQs)

105,6.6,0.7
40,-0.4,2
90,-2.5,1.4
180,-1.2,1.4
375,0.8,1.4
750,0.2,1.4
1500,-0.1,1.4
3000,3.2,1.4
6000,6.6,1.4
10000,4.9,2

How this format loads

EqualizerAPO: the .txt goes in your config folder and is included from config.txt (the parametric filters apply system-wide on Windows). Wavelet and most DAPs accept the same band table typed into their parametric EQ: same frequencies, same gains, same Q. Preamp exists so the loudest boosted band cannot clip.

Qudelix-5K / 71: the CSV is the AutoEq interchange the app's EQ import accepts - open the EQ screen, import/paste, and the ten bands above land as parametric filters (connect the app to the dongle first). Wavelet (Android): the same CSV feeds its parametric-EQ import; on setups without import, the band table above is short enough to type in by hand. Menu names move between app versions - the numbers stay the same.

Facts on this page come from the measured curve on file; the target curve and the fit are approximations. Nothing here is a recommendation to EQ - it is the preset, labeled, for people who already EQ.