The Jomo Audio Nautilus ranks #803 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Prices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#803 Jomo Audio Nautilus: $799 Discontinued eBay
Pros: A broadly balanced tuning with a preference score of 68 against the Harman target.
Cons: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.7 dB standard deviation from target. Discontinued.
Is the Jomo Audio Nautilus right for you?
Buy it if
- you are sensitive to bright or sharp treble (treble sits 2.5 dB below target).
- you are happy to use EQ: our preset lifts its Harman match by about 16 points.
Skip it if
- you want to buy it new: it is discontinued.
| Back | Closed |
|---|---|
| Connection | Wired (3.5mm / 4.4mm) |
| Deviation From Target | 2.74 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 Dynamic (10mm DLC), 1 Planar |
| Form Factor | In-ear |
| Harman Preference Score | 68 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.1 dB at 30 Hz) |
| Tonal Tilt | +0.15 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 84 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.4 dB | 0.70 |
| High shelf | 10,000 Hz | -5.0 dB | 0.70 |
| Peak | 135 Hz | -3.3 dB | 0.79 |
| Peak | 1,827 Hz | -3.2 dB | 4.22 |
| Peak | 3,099 Hz | +2.8 dB | 5.19 |
| Peak | 5,673 Hz | +6.0 dB | 2.91 |
Neutral target
Set a preamp of -5.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 86 out of 100, up from 50.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -5.1 dB | 0.70 |
| High shelf | 10,000 Hz | -5.0 dB | 0.70 |
| Peak | 23 Hz | +2.3 dB | 2.25 |
| Peak | 126 Hz | -3.5 dB | 0.73 |
| Peak | 734 Hz | +1.7 dB | 1.90 |
| Peak | 1,827 Hz | -3.2 dB | 4.24 |
| Peak | 3,099 Hz | +2.8 dB | 5.18 |
| Peak | 4,278 Hz | -1.7 dB | 6.00 |
| Peak | 5,673 Hz | +6.0 dB | 2.90 |
Studio flat target
Set a preamp of -5.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 87 out of 100, up from 33.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.7 dB | 0.70 |
| Peak | 152 Hz | -5.2 dB | 0.75 |
| Peak | 1,769 Hz | -2.5 dB | 4.81 |
| Peak | 2,985 Hz | +5.1 dB | 4.28 |
| Peak | 4,346 Hz | -2.5 dB | 6.00 |
| Peak | 5,735 Hz | +6.0 dB | 3.59 |
Warm target
Set a preamp of -6.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 89 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.6 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 23 Hz | +2.6 dB | 1.88 |
| Peak | 130 Hz | -3.2 dB | 0.85 |
| Peak | 752 Hz | +1.9 dB | 1.71 |
| Peak | 1,875 Hz | -3.9 dB | 3.27 |
| Peak | 3,125 Hz | +1.8 dB | 5.68 |
| Peak | 4,253 Hz | -2.2 dB | 6.00 |
| Peak | 5,836 Hz | +6.0 dB | 5.24 |
Bass target
Set a preamp of -5.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 83 out of 100, up from 55.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.6 dB | 0.70 |
| High shelf | 10,000 Hz | -5.0 dB | 0.70 |
| Peak | 174 Hz | -3.0 dB | 1.05 |
| Peak | 738 Hz | +1.6 dB | 1.86 |
| Peak | 1,821 Hz | -3.2 dB | 4.04 |
| Peak | 3,097 Hz | +2.8 dB | 5.12 |
| Peak | 4,277 Hz | -1.7 dB | 6.00 |
| Peak | 5,673 Hz | +6.0 dB | 2.91 |
Bright target
Set a preamp of -6.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 80 out of 100, up from 38.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -5.2 dB | 0.70 |
| High shelf | 10,000 Hz | -1.0 dB | 0.70 |
| Peak | 23 Hz | +2.4 dB | 2.20 |
| Peak | 128 Hz | -3.5 dB | 0.73 |
| Peak | 730 Hz | +1.6 dB | 2.01 |
| Peak | 1,816 Hz | -3.3 dB | 4.25 |
| Peak | 3,119 Hz | +3.2 dB | 4.93 |
| Peak | 5,345 Hz | +6.0 dB | 1.79 |
V-shaped target
Set a preamp of -5.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 77 out of 100, up from 54.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.4 dB | 0.70 |
| Peak | 157 Hz | -1.5 dB | 1.39 |
| Peak | 632 Hz | +1.3 dB | 1.78 |
| Peak | 1,773 Hz | -3.1 dB | 3.89 |
| Peak | 3,067 Hz | +3.1 dB | 5.18 |
| Peak | 5,082 Hz | +5.5 dB | 1.37 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Jomo Audio Nautilus measures across the audible range, against the Harman in-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 4 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: median of 4 measurements from the squig.link databases of audioamigo, hu-fi, jaytiss and koi. Thanks to each of them for publishing their work.