AutoEq / EqualizerAPO preset for STAX SR-L500 MKII Electrostatic Earspeaker Headphone

Generated from this product's measured frequency response (source: AutoEq · oratory1990), 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)

# STAX SR-L500 MKII Electrostatic Earspeaker Headphone - AutoEq-style parametric preset (measured: AutoEq · oratory1990)
# AutoEq-style parametric preset - TheTuningChoice (approximate Harman over-ear (OE 2018) target; estimate, treat as a starting point)
Preamp: -12.3 dB
Filter 1: ON LSC Fc 105 Hz Gain 12.0 dB Q 0.70
Filter 2: ON PK Fc 40 Hz Gain -0.6 dB Q 2.00
Filter 3: ON PK Fc 90 Hz Gain -4.3 dB Q 1.40
Filter 4: ON PK Fc 180 Hz Gain 1.4 dB Q 1.40
Filter 5: ON PK Fc 375 Hz Gain 2.6 dB Q 1.40
Filter 6: ON PK Fc 750 Hz Gain 0.6 dB Q 1.40
Filter 7: ON PK Fc 1500 Hz Gain 0.0 dB Q 1.40
Filter 8: ON PK Fc 3000 Hz Gain 5.1 dB Q 1.40
Filter 9: ON PK Fc 6000 Hz Gain 0.7 dB Q 1.40
Filter 10: ON PK Fc 10000 Hz Gain 4.0 dB Q 2.00

GraphicEQ line (EqualizerAPO)

Preamp: -20.0 dB
GraphicEQ: 20 19.7; 27 16.1; 36 12.4; 47 9.0; 63 6.4; 84 5.0; 112 3.6; 150 2.9; 200 2.1; 267 2.6; 356 2.8; 474 2.8; 632 2.2; 843 1.0; 1125 -0.5; 1500 0.4; 2000 4.4; 2667 5.1; 3557 5.2; 4743 3.1; 6325 0.7; 8434 2.9; 11247 1.1; 14998 -0.7; 20000 -17.3

CSV band table (phone-app EQs)

105,12.0,0.7
40,-0.6,2
90,-4.3,1.4
180,1.4,1.4
375,2.6,1.4
750,0.6,1.4
1500,0.0,1.4
3000,5.1,1.4
6000,0.7,1.4
10000,4.0,2

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.