The TOZO NC9 ranks #205 out of 1448 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: TOZO
Prices on this page were last checked October 20, 2026 at 10:35 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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#205 TOZO NC9: $27.99 TWS Amazon $27.99 eBay
Pros: Budget ANC earbuds at about $28 with IPX8 protection and long 14 hour battery life, 60 with the case. Bass sits about 3.4 dB above target for a punchy, full low end, and the mids stay within 0.2 dB of target.
Cons: A 6.5 dB peak near 11.5 kHz and a 3.7 dB peak near 8.2 kHz make the treble bright, and the bass emphasis may be too much for neutral listeners. Codec support is not published, and the score rests on a single measurement.
Is the TOZO NC9 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 78).
- your taste runs bass-heavy: it scores 84 for that sound.
- you want sub-bass rumble that reaches down to 20 Hz.
- you want noise cancelling for commutes or flights.
Skip it if
- you want the best value: the higher-rated Truthear Gate costs about $6 less.
| Released | 2024 (2 years ago) |
|---|---|
| Active Noise Cancelling | Yes |
| Back | Closed |
| Battery Life | 14 hours (60 with case) |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Connection | True wireless |
| Deviation From Target | 1.59 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 78 (1 squig.link measurement, calibrated to AutoEQ) |
| IP Rating | IPX8 |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.7 dB at 30 Hz) |
| Tonal Tilt | -0.51 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 90 out of 100, up from 78.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.1 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 109 Hz | -2.7 dB | 1.07 |
| Peak | 3,219 Hz | +1.5 dB | 1.51 |
Neutral target
Set a preamp of -1.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 91 out of 100, up from 35.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.7 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 98 Hz | -2.9 dB | 0.95 |
| Peak | 3,219 Hz | +1.5 dB | 1.50 |
Studio flat target
Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 93 out of 100, up from 17.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -12.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 125 Hz | -4.5 dB | 0.82 |
| Peak | 2,602 Hz | +4.2 dB | 2.22 |
| Peak | 3,509 Hz | +1.2 dB | 5.39 |
| Peak | 5,215 Hz | -3.0 dB | 5.56 |
Warm target
Set a preamp of -0.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 91 out of 100, up from 81.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.9 dB | 0.70 |
| High shelf | 10,000 Hz | -2.1 dB | 0.70 |
| Peak | 106 Hz | -2.6 dB | 1.17 |
| Peak | 8,000 Hz | -2.8 dB | 0.92 |
Bass target
Set a preamp of -3.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 84.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.6 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 23 Hz | +2.1 dB | 2.38 |
| Peak | 113 Hz | -2.6 dB | 1.17 |
| Peak | 3,219 Hz | +1.5 dB | 1.52 |
| Peak | 5,141 Hz | -1.2 dB | 6.00 |
Bright target
Set a preamp of -3.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 93 out of 100, up from 26.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.7 dB | 0.70 |
| High shelf | 10,000 Hz | +1.3 dB | 0.70 |
| Peak | 98 Hz | -2.9 dB | 0.91 |
| Peak | 5,345 Hz | +2.9 dB | 0.61 |
V-shaped target
Set a preamp of -3.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 91 out of 100, up from 80.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.3 dB | 0.70 |
| High shelf | 10,000 Hz | +1.7 dB | 0.70 |
| Peak | 94 Hz | -1.9 dB | 1.67 |
| Peak | 5,345 Hz | +3.4 dB | 0.57 |
- Links
- Reviews, Comparisons and Sound Samples
Frequency Response
How the TOZO NC9 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 a single measurement, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: a single measurement from the squig.link database of fernandagunsan. Thanks to them for publishing their work.