The NF Audio RA10 ranks #292 out of 1476 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: NF Audio
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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#292 NF Audio RA10: $49 Discontinued eBay
Pros: A budget 6 mm dynamic IEM at about $49 with a preference score of 77 across two measurements. Bass reaches 20 Hz close to target, and the silver plated cable is detachable.
Cons: A 7.3 dB peak near 8.2 kHz and a 5.3 dB dip near 4.6 kHz make the treble uneven, so sibilants can stand out while vocals sound slightly recessed. It is discontinued and hard to find.
Is the NF Audio RA10 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 77).
Skip it if
- you want to buy it new: it is discontinued.
| Released | Nov 2022 (3 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.95 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 6mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 77 (average of 2 squig.link measurements scored separately, calibrated to AutoEQ) |
| Impedance | 15 ohms |
| Sensitivity | 102 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Tonal Tilt | +0.15 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -6.2 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 90 out of 100, up from 77.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.3 dB | 0.70 |
| High shelf | 10,000 Hz | -0.7 dB | 0.70 |
| Peak | 214 Hz | -0.8 dB | 1.38 |
| Peak | 721 Hz | +1.1 dB | 3.20 |
| Peak | 1,407 Hz | -0.9 dB | 3.25 |
| Peak | 2,201 Hz | -1.9 dB | 2.47 |
| Peak | 3,598 Hz | +1.6 dB | 6.00 |
| Peak | 4,546 Hz | +6.0 dB | 2.74 |
| Peak | 5,713 Hz | +2.2 dB | 5.91 |
| Peak | 7,627 Hz | -4.9 dB | 6.00 |
Neutral target
Set a preamp of -6.2 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 91 out of 100, up from 50.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.3 dB | 0.70 |
| High shelf | 10,000 Hz | -0.7 dB | 0.70 |
| Peak | 186 Hz | -0.7 dB | 0.84 |
| Peak | 720 Hz | +1.1 dB | 3.20 |
| Peak | 1,409 Hz | -0.9 dB | 3.23 |
| Peak | 2,204 Hz | -1.9 dB | 2.48 |
| Peak | 3,598 Hz | +1.6 dB | 6.00 |
| Peak | 4,546 Hz | +6.0 dB | 2.74 |
| Peak | 5,712 Hz | +2.2 dB | 5.91 |
| Peak | 7,627 Hz | -4.9 dB | 6.00 |
Studio flat target
Set a preamp of -5.1 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 92 out of 100, up from 35.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 24 Hz | -1.2 dB | 1.71 |
| Peak | 188 Hz | -2.6 dB | 0.86 |
| Peak | 3,995 Hz | +5.0 dB | 2.12 |
| Peak | 5,296 Hz | +1.5 dB | 5.40 |
| Peak | 7,547 Hz | -4.8 dB | 6.00 |
Warm target
Set a preamp of -3.9 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 89 out of 100, up from 72.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.5 dB | 0.70 |
| High shelf | 10,000 Hz | -4.3 dB | 0.70 |
| Peak | 713 Hz | +1.4 dB | 2.46 |
| Peak | 2,270 Hz | -2.8 dB | 2.26 |
| Peak | 3,739 Hz | +1.7 dB | 6.00 |
| Peak | 4,607 Hz | +4.1 dB | 3.33 |
| Peak | 7,585 Hz | -6.5 dB | 6.00 |
Bass target
Set a preamp of -6.2 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 91 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.1 dB | 0.70 |
| High shelf | 10,000 Hz | -0.7 dB | 0.70 |
| Peak | 220 Hz | -0.8 dB | 1.57 |
| Peak | 721 Hz | +1.1 dB | 3.20 |
| Peak | 1,407 Hz | -0.9 dB | 3.25 |
| Peak | 2,201 Hz | -1.9 dB | 2.47 |
| Peak | 3,599 Hz | +1.6 dB | 6.00 |
| Peak | 4,546 Hz | +6.0 dB | 2.74 |
| Peak | 5,713 Hz | +2.2 dB | 5.91 |
| Peak | 7,627 Hz | -4.9 dB | 6.00 |
Bright target
Set a preamp of -6.4 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 90 out of 100, up from 41.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.3 dB | 0.70 |
| High shelf | 10,000 Hz | +1.8 dB | 0.70 |
| Peak | 186 Hz | -0.7 dB | 0.66 |
| Peak | 724 Hz | +1.1 dB | 3.31 |
| Peak | 2,201 Hz | -2.1 dB | 1.98 |
| Peak | 3,667 Hz | +1.4 dB | 6.00 |
| Peak | 4,321 Hz | +6.0 dB | 1.74 |
| Peak | 5,733 Hz | +3.4 dB | 6.00 |
| Peak | 7,912 Hz | -2.5 dB | 5.60 |
V-shaped target
Set a preamp of -6.4 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 89 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.7 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 2,201 Hz | -1.7 dB | 1.78 |
| Peak | 3,572 Hz | +1.5 dB | 6.00 |
| Peak | 4,321 Hz | +6.0 dB | 1.55 |
| Peak | 5,737 Hz | +3.0 dB | 6.00 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the NF Audio RA10 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 average of 2 independent measurements, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: the average of 2 independent measurements from the squig.link databases of boizoff and soundcheck39. Thanks to each of them for publishing their work.