The NF Acous RG15 ranks #443 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: NF Acous
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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#443 NF Acous RG15: $129 Discontinued eBay
Pros: A broadly balanced tuning with a preference score of 74 against the Harman target.
Cons: An uneven response, 1.8 dB standard deviation from target. Discontinued.
Is the NF Acous RG15 right for you?
Buy it if
- you want sub-bass rumble that reaches down to 20 Hz.
- 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 |
| Deviation From Target | 1.84 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 74 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.8 dB at 30 Hz) |
| Tonal Tilt | -0.36 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.0 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 90 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.8 dB | 0.70 |
| High shelf | 10,000 Hz | -4.9 dB | 0.70 |
| Peak | 32 Hz | +1.3 dB | 1.73 |
| Peak | 82 Hz | -0.8 dB | 2.68 |
| Peak | 153 Hz | -4.2 dB | 0.79 |
| Peak | 713 Hz | +1.2 dB | 2.21 |
| Peak | 1,385 Hz | -1.3 dB | 5.88 |
| Peak | 3,430 Hz | +1.0 dB | 1.39 |
| Peak | 5,547 Hz | -3.7 dB | 3.89 |
| Peak | 7,464 Hz | -2.3 dB | 6.00 |
Neutral target
Set a preamp of -0.9 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 92 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.3 dB | 0.70 |
| High shelf | 10,000 Hz | -4.9 dB | 0.70 |
| Peak | 33 Hz | +0.9 dB | 2.63 |
| Peak | 75 Hz | -0.7 dB | 2.80 |
| Peak | 144 Hz | -4.2 dB | 0.69 |
| Peak | 704 Hz | +1.2 dB | 2.07 |
| Peak | 1,386 Hz | -1.3 dB | 5.99 |
| Peak | 3,430 Hz | +1.0 dB | 1.36 |
| Peak | 5,545 Hz | -3.7 dB | 3.91 |
| Peak | 7,463 Hz | -2.3 dB | 6.00 |
Studio flat 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 the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 89 out of 100, up from 17.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -12.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 155 Hz | -6.2 dB | 0.73 |
| Peak | 2,620 Hz | +3.8 dB | 2.27 |
| Peak | 5,627 Hz | -5.6 dB | 3.56 |
| Peak | 7,390 Hz | -2.6 dB | 5.62 |
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 the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 89 out of 100, up from 75.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.5 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 148 Hz | -4.1 dB | 0.81 |
| Peak | 5,932 Hz | -5.2 dB | 1.42 |
Bass target
Set a preamp of -3.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 75.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.0 dB | 0.70 |
| High shelf | 10,000 Hz | -4.9 dB | 0.70 |
| Peak | 32 Hz | +1.5 dB | 1.62 |
| Peak | 83 Hz | -0.9 dB | 2.63 |
| Peak | 156 Hz | -4.2 dB | 0.82 |
| Peak | 715 Hz | +1.2 dB | 2.24 |
| Peak | 1,385 Hz | -1.4 dB | 5.85 |
| Peak | 3,430 Hz | +1.0 dB | 1.40 |
| Peak | 5,548 Hz | -3.7 dB | 3.87 |
| Peak | 7,465 Hz | -2.3 dB | 6.00 |
Bright target
Set a preamp of -2.4 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 median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 88 out of 100, up from 29.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.4 dB | 0.70 |
| High shelf | 10,000 Hz | -1.4 dB | 0.70 |
| Peak | 144 Hz | -4.2 dB | 0.70 |
| Peak | 3,654 Hz | +2.3 dB | 1.60 |
V-shaped target
Set a preamp of -2.8 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 86 out of 100, up from 77.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.7 dB | 0.70 |
| Peak | 144 Hz | -3.0 dB | 0.86 |
| Peak | 3,711 Hz | +2.7 dB | 1.20 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the NF Acous RG15 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 3 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 3 measurements from the squig.link databases of koi, pw and treblewellxtended. Thanks to each of them for publishing their work.