AutoEq / EqualizerAPO preset for Sennheiser HD 820 - Open Box

Generated from this product's measured frequency response (source: AutoEq · HypetheSonics), 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 820 - Open Box - AutoEq-style parametric preset (measured: AutoEq · HypetheSonics)
# AutoEq-style parametric preset - TheTuningChoice (approximate Harman over-ear (OE 2018) target; estimate, treat as a starting point)
Preamp: -6.3 dB
Filter 1: ON LSC Fc 105 Hz Gain 6.0 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 -1.6 dB Q 1.40
Filter 4: ON PK Fc 180 Hz Gain -0.7 dB Q 1.40
Filter 5: ON PK Fc 375 Hz Gain 5.8 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 3.2 dB Q 1.40
Filter 8: ON PK Fc 3000 Hz Gain 1.2 dB Q 1.40
Filter 9: ON PK Fc 6000 Hz Gain 0.6 dB Q 1.40
Filter 10: ON PK Fc 10000 Hz Gain -2.3 dB Q 2.00

GraphicEQ line (EqualizerAPO)

Preamp: -8.6 dB
GraphicEQ: 20 8.3; 27 6.7; 36 5.6; 47 5.7; 63 5.5; 84 2.4; 112 1.0; 150 -0.6; 200 -0.5; 267 7.5; 356 6.6; 474 1.6; 632 0.5; 843 0.0; 1125 0.8; 1500 3.9; 2000 4.9; 2667 -1.6; 3557 3.0; 4743 4.3; 6325 0.4; 8434 -4.1; 11247 4.2; 14998 -2.0; 20000 -8.1

CSV band table (phone-app EQs)

105,6.0,0.7
40,0.4,2
90,-1.6,1.4
180,-0.7,1.4
375,5.8,1.4
750,-1.7,1.4
1500,3.2,1.4
3000,1.2,1.4
6000,0.6,1.4
10000,-2.3,2

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.