AutoEq / EqualizerAPO preset for Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black

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)

# Koss: Porta Pro Wireless 2.0 Bluetooth Headphones - Bluetooth Model - Black - 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: -5.2 dB
Filter 1: ON LSC Fc 105 Hz Gain 3.5 dB Q 0.70
Filter 2: ON PK Fc 40 Hz Gain -1.1 dB Q 2.00
Filter 3: ON PK Fc 90 Hz Gain -4.8 dB Q 1.40
Filter 4: ON PK Fc 180 Hz Gain -4.1 dB Q 1.40
Filter 5: ON PK Fc 375 Hz Gain -1.4 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 -0.5 dB Q 1.40
Filter 8: ON PK Fc 3000 Hz Gain 2.6 dB Q 1.40
Filter 9: ON PK Fc 6000 Hz Gain 4.9 dB Q 1.40
Filter 10: ON PK Fc 10000 Hz Gain 4.2 dB Q 2.00

GraphicEQ line (EqualizerAPO)

Preamp: -14.0 dB
GraphicEQ: 20 6.8; 27 4.5; 36 2.2; 47 0.2; 63 -1.5; 84 -2.9; 112 -3.9; 150 -4.7; 200 -4.9; 267 -3.4; 356 -2.3; 474 -1.2; 632 -0.5; 843 -0.2; 1125 0.6; 1500 0.6; 2000 -0.6; 2667 1.7; 3557 3.9; 4743 9.9; 6325 5.5; 8434 2.6; 11247 13.7; 14998 3.5; 20000 -1.1

CSV band table (phone-app EQs)

105,3.5,0.7
40,-1.1,2
90,-4.8,1.4
180,-4.1,1.4
375,-1.4,1.4
750,0.2,1.4
1500,-0.5,1.4
3000,2.6,1.4
6000,4.9,1.4
10000,4.2,2

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.