AutoEq / EqualizerAPO preset for Sennheiser HD 25 PLUS Headphones

Generated from this product's measured frequency response (source: AutoEq · Rtings), 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 25 PLUS Headphones - AutoEq-style parametric preset (measured: AutoEq · Rtings)
# AutoEq-style parametric preset - TheTuningChoice (approximate Harman over-ear (OE 2018) target; estimate, treat as a starting point)
Preamp: -10.0 dB
Filter 1: ON LSC Fc 105 Hz Gain 9.7 dB Q 0.70
Filter 2: ON PK Fc 40 Hz Gain -0.7 dB Q 2.00
Filter 3: ON PK Fc 90 Hz Gain -5.3 dB Q 1.40
Filter 4: ON PK Fc 180 Hz Gain -3.5 dB Q 1.40
Filter 5: ON PK Fc 375 Hz Gain -1.1 dB Q 1.40
Filter 6: ON PK Fc 750 Hz Gain 1.7 dB Q 1.40
Filter 7: ON PK Fc 1500 Hz Gain 0.3 dB Q 1.40
Filter 8: ON PK Fc 3000 Hz Gain -0.4 dB Q 1.40
Filter 9: ON PK Fc 6000 Hz Gain 0.8 dB Q 1.40
Filter 10: ON PK Fc 10000 Hz Gain -9.2 dB Q 2.00

GraphicEQ line (EqualizerAPO)

Preamp: -15.5 dB
GraphicEQ: 20 15.2; 27 11.9; 36 8.5; 47 5.9; 63 4.0; 84 0.5; 112 -1.1; 150 -2.2; 200 -3.8; 267 -4.1; 356 -2.1; 474 0.9; 632 1.8; 843 0.8; 1125 0.3; 1500 1.1; 2000 -0.1; 2667 -1.1; 3557 -1.0; 4743 3.0; 6325 -0.1; 8434 -10.8; 11247 -8.5; 14998 6.1; 20000 3.5

CSV band table (phone-app EQs)

105,9.7,0.7
40,-0.7,2
90,-5.3,1.4
180,-3.5,1.4
375,-1.1,1.4
750,1.7,1.4
1500,0.3,1.4
3000,-0.4,1.4
6000,0.8,1.4
10000,-9.2,2

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.