7Hz Salnotes Zero has 10 published AutoEQ corrections, from 10 measurement rigs, and this page carries every one of them. Below is the curve, the exact parametric filters behind it, and a one-click preset for EQBase. macOS has no system-wide equalizer of its own, so applying a correction to everything your Mac plays, rather than inside a single player, needs an app that sits on the system audio path.
Each measurement below carries four things: the correction curve, its parametric filters, the same filters as copy-paste text in AutoEQ's format (which Equalizer APO and Peace, REW and most desktop parametric equalizers import, and which EQBase's own Expert EQ reads and writes), and EQBase's ten-band fit of that correction. The ten-band figures are what the downloadable preset applies, so what you hear matches what is written here. AutoEQ publishes its own ten-band file on the same grid, fitted to the raw measurement rather than to these filters, so the two agree closely through the midrange and can differ at the extremes.
Measured by oratory1990. Preamp −2.5 dB. Correction data from the AutoEQ project.
Preamp: -2.5 dB
Filter 1: ON LSC Fc 105 Hz Gain -0.4 dB Q 0.70
Filter 2: ON PK Fc 7148 Hz Gain 2.5 dB Q 1.39
Filter 3: ON PK Fc 186 Hz Gain -1.3 dB Q 1.35
Filter 4: ON PK Fc 65 Hz Gain 1.7 dB Q 1.11
Filter 5: ON PK Fc 1677 Hz Gain -1.1 dB Q 1.82
Filter 6: ON HSC Fc 10000 Hz Gain -1.3 dB Q 0.70
Filter 7: ON PK Fc 857 Hz Gain 0.9 dB Q 1.64
Filter 8: ON PK Fc 9824 Hz Gain 0.9 dB Q 1.98
Filter 9: ON PK Fc 3316 Hz Gain -0.6 dB Q 2.50
Filter 10: ON PK Fc 1261 Hz Gain -0.7 dB Q 3.34
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
−0.2 dB
62 Hz
+1.4 dB
125 Hz
−0.3 dB
250 Hz
−0.7 dB
500 Hz
+0.1 dB
1 kHz
+0.4 dB
2 kHz
−0.9 dB
4 kHz
−0.0 dB
8 kHz
+2.6 dB
16 kHz
−1.1 dB
Preamp
−2.5 dB
Measured by crinacle. Preamp −2.3 dB. Correction data from the AutoEQ project.
Preamp: -2.3 dB
Filter 1: ON LSC Fc 105 Hz Gain -0.9 dB Q 0.70
Filter 2: ON PK Fc 4566 Hz Gain -1.8 dB Q 1.53
Filter 3: ON PK Fc 74 Hz Gain 2.4 dB Q 1.19
Filter 4: ON PK Fc 1536 Hz Gain -1.5 dB Q 1.56
Filter 5: ON PK Fc 402 Hz Gain 2.3 dB Q 2.29
Filter 6: ON HSC Fc 10000 Hz Gain 0.7 dB Q 0.70
Filter 7: ON PK Fc 156 Hz Gain -1.4 dB Q 2.28
Filter 8: ON PK Fc 111 Hz Gain 1.5 dB Q 4.69
Filter 9: ON PK Fc 660 Hz Gain 0.3 dB Q 1.92
Filter 10: ON PK Fc 43 Hz Gain 0.2 dB Q 2.28
Ten-band version
Band
Gain
31 Hz
−0.7 dB
62 Hz
+1.3 dB
125 Hz
+0.4 dB
250 Hz
−0.0 dB
500 Hz
+1.3 dB
1 kHz
−0.4 dB
2 kHz
−0.7 dB
4 kHz
−1.5 dB
8 kHz
−0.1 dB
16 kHz
+0.6 dB
Preamp
−2.3 dB
Measured by Super Review. Preamp −1.6 dB. Correction data from the AutoEQ project.
Preamp: -1.6 dB
Filter 1: ON LSC Fc 105 Hz Gain 0.4 dB Q 0.70
Filter 2: ON PK Fc 722 Hz Gain 1.6 dB Q 1.49
Filter 3: ON PK Fc 182 Hz Gain -1.5 dB Q 1.20
Filter 4: ON PK Fc 66 Hz Gain 1.1 dB Q 1.13
Filter 5: ON PK Fc 5979 Hz Gain 1.4 dB Q 4.43
Filter 6: ON HSC Fc 10000 Hz Gain -3.5 dB Q 0.70
Filter 7: ON PK Fc 6878 Hz Gain 0.7 dB Q 1.99
Filter 8: ON PK Fc 3970 Hz Gain -1.0 dB Q 3.29
Filter 9: ON PK Fc 2393 Hz Gain 0.7 dB Q 2.43
Filter 10: ON PK Fc 1494 Hz Gain -0.6 dB Q 2.41
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+0.4 dB
62 Hz
+1.3 dB
125 Hz
−0.4 dB
250 Hz
−0.9 dB
500 Hz
+0.6 dB
1 kHz
+0.6 dB
2 kHz
+0.3 dB
4 kHz
−0.8 dB
8 kHz
+0.4 dB
16 kHz
−3.0 dB
Preamp
−1.6 dB
Measured by HypetheSonics. Preamp −2.5 dB. Correction data from the AutoEQ project.
Preamp: -2.5 dB
Filter 1: ON LSC Fc 105 Hz Gain -0.0 dB Q 0.70
Filter 2: ON PK Fc 2721 Hz Gain -1.1 dB Q 0.63
Filter 3: ON PK Fc 6195 Hz Gain 2.9 dB Q 1.60
Filter 4: ON PK Fc 65 Hz Gain 1.9 dB Q 0.84
Filter 5: ON PK Fc 175 Hz Gain -1.1 dB Q 1.52
Filter 6: ON HSC Fc 10000 Hz Gain -3.5 dB Q 0.70
Filter 7: ON PK Fc 720 Hz Gain 0.9 dB Q 1.85
Filter 8: ON PK Fc 1344 Hz Gain -0.8 dB Q 1.89
Filter 9: ON PK Fc 8657 Hz Gain 1.3 dB Q 2.31
Filter 10: ON PK Fc 2152 Hz Gain 0.5 dB Q 3.29
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+0.3 dB
62 Hz
+1.8 dB
125 Hz
+0.0 dB
250 Hz
−0.4 dB
500 Hz
+0.3 dB
1 kHz
−0.2 dB
2 kHz
−0.6 dB
4 kHz
−0.1 dB
8 kHz
+2.2 dB
16 kHz
−3.2 dB
Preamp
−2.5 dB
Measured by Harpo. Preamp −2.3 dB. Correction data from the AutoEQ project.
Preamp: -2.3 dB
Filter 1: ON LSC Fc 105 Hz Gain 0.6 dB Q 0.70
Filter 2: ON PK Fc 68 Hz Gain 1.9 dB Q 0.98
Filter 3: ON PK Fc 186 Hz Gain -1.0 dB Q 1.26
Filter 4: ON PK Fc 744 Hz Gain 1.0 dB Q 1.32
Filter 5: ON PK Fc 1314 Hz Gain -0.9 dB Q 1.90
Filter 6: ON HSC Fc 10000 Hz Gain -4.1 dB Q 0.70
Filter 7: ON PK Fc 6085 Hz Gain 2.2 dB Q 4.63
Filter 8: ON PK Fc 3554 Hz Gain -0.7 dB Q 2.28
Filter 9: ON PK Fc 2618 Hz Gain 0.9 dB Q 3.02
Filter 10: ON PK Fc 4580 Hz Gain -0.5 dB Q 5.11
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+0.7 dB
62 Hz
+2.2 dB
125 Hz
+0.1 dB
250 Hz
−0.6 dB
500 Hz
+0.4 dB
1 kHz
+0.1 dB
2 kHz
+0.1 dB
4 kHz
−0.4 dB
8 kHz
−0.2 dB
16 kHz
−3.5 dB
Preamp
−2.3 dB
Measured by Fahryst. Preamp −1.9 dB. Correction data from the AutoEQ project.
Preamp: -1.9 dB
Filter 1: ON LSC Fc 105 Hz Gain 0.0 dB Q 0.70
Filter 2: ON PK Fc 5720 Hz Gain 2.0 dB Q 2.87
Filter 3: ON PK Fc 66 Hz Gain 1.7 dB Q 0.80
Filter 4: ON PK Fc 171 Hz Gain -1.0 dB Q 1.37
Filter 5: ON PK Fc 1475 Hz Gain -1.0 dB Q 2.56
Filter 6: ON HSC Fc 10000 Hz Gain -3.0 dB Q 0.70
Filter 7: ON PK Fc 733 Hz Gain 0.7 dB Q 1.58
Filter 8: ON PK Fc 7674 Hz Gain 0.9 dB Q 3.01
Filter 9: ON PK Fc 288 Hz Gain -0.3 dB Q 2.21
Filter 10: ON PK Fc 1200 Hz Gain -0.4 dB Q 3.45
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+0.3 dB
62 Hz
+1.6 dB
125 Hz
+0.0 dB
250 Hz
−0.6 dB
500 Hz
+0.3 dB
1 kHz
+0.0 dB
2 kHz
−0.3 dB
4 kHz
+0.3 dB
8 kHz
+0.9 dB
16 kHz
−2.7 dB
Preamp
−1.9 dB
Measured by Jaytiss. Preamp −4.7 dB. Correction data from the AutoEQ project.
Preamp: -4.7 dB
Filter 1: ON LSC Fc 105 Hz Gain 2.0 dB Q 0.70
Filter 2: ON PK Fc 6290 Hz Gain 4.8 dB Q 2.34
Filter 3: ON PK Fc 173 Hz Gain -1.3 dB Q 0.63
Filter 4: ON PK Fc 1394 Hz Gain -1.3 dB Q 0.89
Filter 5: ON PK Fc 759 Hz Gain 1.1 dB Q 1.44
Filter 6: ON HSC Fc 10000 Hz Gain -0.6 dB Q 0.70
Filter 7: ON PK Fc 42 Hz Gain -0.4 dB Q 1.75
Filter 8: ON PK Fc 77 Hz Gain 0.2 dB Q 1.92
Filter 9: ON PK Fc 3495 Hz Gain -0.3 dB Q 3.08
Filter 10: ON PK Fc 4920 Hz Gain 0.3 dB Q 4.43
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+1.5 dB
62 Hz
+1.2 dB
125 Hz
−0.5 dB
250 Hz
−0.9 dB
500 Hz
+0.1 dB
1 kHz
−0.2 dB
2 kHz
−0.8 dB
4 kHz
+0.4 dB
8 kHz
+2.0 dB
16 kHz
−0.7 dB
Preamp
−4.7 dB
Measured by Auriculares Argentina. Preamp −5.1 dB. Correction data from the AutoEQ project.
Preamp: -5.1 dB
Filter 1: ON LSC Fc 105 Hz Gain 2.6 dB Q 0.70
Filter 2: ON PK Fc 6337 Hz Gain 5.3 dB Q 3.61
Filter 3: ON PK Fc 210 Hz Gain -1.0 dB Q 1.03
Filter 4: ON PK Fc 4135 Hz Gain -1.4 dB Q 2.06
Filter 5: ON PK Fc 1370 Hz Gain -1.0 dB Q 2.36
Filter 6: ON HSC Fc 10000 Hz Gain -4.7 dB Q 0.70
Filter 7: ON PK Fc 776 Hz Gain 0.6 dB Q 2.28
Filter 8: ON PK Fc 1180 Hz Gain 0.3 dB Q 3.24
Filter 9: ON PK Fc 7029 Hz Gain 1.6 dB Q 5.94
Filter 10: ON PK Fc 1163 Hz Gain -0.7 dB Q 3.30
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+2.2 dB
62 Hz
+1.8 dB
125 Hz
+0.2 dB
250 Hz
−0.9 dB
500 Hz
+0.1 dB
1 kHz
−0.3 dB
2 kHz
−0.1 dB
4 kHz
−1.1 dB
8 kHz
+1.4 dB
16 kHz
−4.2 dB
Preamp
−5.1 dB
Measured by freeryder05. Preamp −1.5 dB. Correction data from the AutoEQ project.
Preamp: -1.5 dB
Filter 1: ON LSC Fc 105 Hz Gain 0.3 dB Q 0.70
Filter 2: ON PK Fc 681 Hz Gain 1.2 dB Q 1.55
Filter 3: ON PK Fc 175 Hz Gain -1.0 dB Q 1.00
Filter 4: ON PK Fc 66 Hz Gain 1.3 dB Q 1.24
Filter 5: ON PK Fc 3444 Hz Gain -0.5 dB Q 2.65
Filter 6: ON HSC Fc 10000 Hz Gain -3.2 dB Q 0.70
Filter 7: ON PK Fc 8000 Hz Gain 1.6 dB Q 1.02
Filter 8: ON PK Fc 1401 Hz Gain -0.5 dB Q 2.48
Filter 9: ON PK Fc 2164 Hz Gain 0.5 dB Q 3.09
Filter 10: ON PK Fc 3803 Hz Gain -0.6 dB Q 2.10
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
+0.3 dB
62 Hz
+1.4 dB
125 Hz
−0.4 dB
250 Hz
−0.6 dB
500 Hz
+0.6 dB
1 kHz
+0.2 dB
2 kHz
+0.4 dB
4 kHz
−0.7 dB
8 kHz
+1.2 dB
16 kHz
−2.5 dB
Preamp
−1.5 dB
Measured by Ted's Squig Hoard. Preamp −3.0 dB. Correction data from the AutoEQ project.
Preamp: -3.0 dB
Filter 1: ON LSC Fc 105 Hz Gain -0.7 dB Q 0.70
Filter 2: ON PK Fc 6222 Hz Gain 3.0 dB Q 2.22
Filter 3: ON PK Fc 184 Hz Gain -1.4 dB Q 0.81
Filter 4: ON PK Fc 69 Hz Gain 1.7 dB Q 0.95
Filter 5: ON PK Fc 666 Hz Gain 0.8 dB Q 2.04
Filter 6: ON HSC Fc 10000 Hz Gain -0.6 dB Q 0.70
Filter 7: ON PK Fc 1357 Hz Gain -0.8 dB Q 2.14
Filter 8: ON PK Fc 870 Hz Gain 0.4 dB Q 3.40
Filter 9: ON PK Fc 8262 Hz Gain 0.8 dB Q 6.00
Filter 10: ON PK Fc 2137 Hz Gain 0.3 dB Q 3.58
AutoEQ also publishes a 127-point graphic curve, a fixed-band version, the raw measurement and the response graph for this measurement: see the source files.
Ten-band version
Band
Gain
31 Hz
−0.5 dB
62 Hz
+1.0 dB
125 Hz
−0.5 dB
250 Hz
−0.9 dB
500 Hz
+0.2 dB
1 kHz
+0.1 dB
2 kHz
+0.0 dB
4 kHz
+0.2 dB
8 kHz
+2.0 dB
16 kHz
−0.8 dB
Preamp
−3.0 dB
What this correction changes
The largest boost is +2.6 dB at treble (8 kHz), and the largest cut is −1.1 dB at top octave (16 kHz). Total swing across the ten bands is 3.7 dB. Across the three thirds of the band the average movement stays under a decibel, so this is a fine-detail correction rather than a tonal rebalance.
The 10 published measurements on this page, from 10 rigs, do not agree with each other, and the size of the disagreement is worth knowing before picking one. They differ most at top octave (16 kHz), where the ten-band figures span 4.8 dB, and least at upper bass (125 Hz), where they span 0.9 dB.
Applying this on a Mac
The 7Hz Salnotes Zero is an in-ear monitor, and its bass depends far more on the seal than on anything in this correction. A tip that does not seal loses the low bass outright, and no amount of boost puts it back. If the bottom end still sounds missing after applying this, change tips and re-seat them before deciding the curve is wrong.
In-ears are sensitive enough that a Mac's own output drives them without help, so the correction is doing all of the work here rather than sharing it with an amplifier.
In EQBase the fastest route skips this page entirely: open the Headphones pane, search for your model, and apply the correction. The 7Hz Salnotes Zero is in the built-in catalog along with 8,665 other models. The preset above exists for people who want to see the numbers first, or who want a specific measurement rather than the default one.
Either way the correction applies to every app at once, and the free tier carries it with no time limit. The 7Hz Salnotes Zero preset above sets the ten-band curve, which is what the free tier applies, so nothing on this page is behind a purchase.
Common questions
Do these EQ settings work on any Mac app?
Yes, if the equalizer runs on system audio rather than inside one player. EQBase processes everything the Mac plays, so the same correction applies to Spotify, Safari, YouTube, games and calls. The Music app's own equalizer only affects Music.
Where do the 7Hz Salnotes Zero numbers come from?
From 10 published AutoEQ measurements of the 7Hz Salnotes Zero, made by oratory1990, crinacle, Super Review, HypetheSonics, Harpo, Fahryst, Jaytiss, Auriculares Argentina, freeryder05 and Ted's Squig Hoard. Each one is a real frequency-response measurement compared against a target curve, and each produces its own set of filters. They are all on this page rather than averaged together, because a measurement belongs to the person who made it.
Why is the 7Hz Salnotes Zero preamp negative?
The 7Hz Salnotes Zero correction needs −2.5 dB of headroom on its default measurement, so the preset pulls the signal down by that much before the boosts are applied. Boosting a signal that is already near full scale would clip it, and the negative preamp is what buys the room. Skip it and loud passages distort. That is a small figure, meaning this correction is mostly cuts rather than boosts, so it costs very little loudness.
Can I use these filters in a different equalizer?
Yes. The filter table is a standard parametric list: type, frequency, gain and Q. Any parametric equalizer that accepts those four values per band will take them, on any platform. The one-click preset is only a shortcut for EQBase users.
Correction data from the AutoEQ project by Jaakko Pasanen, used under the MIT licence. The measurements themselves are the work of the people credited on each curve above. EQBase ships the same catalog in the app, with the same attribution.
EQBase