The Sonic Memory SM2 ranks #42 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Sonic Memory
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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#42 Sonic Memory SM2: $249 eBay
Pros: Tuned close to the Harman target that most listeners prefer in blind tests (preference score 83).
Cons: The rating reflects sound quality only; comfort, build and noise isolation are not part of the score.
Is the Sonic Memory SM2 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 83).
- you want sub-bass rumble that reaches down to 20 Hz.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.24 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 83 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.0 dB at 30 Hz) |
| Tonal Tilt | -0.16 (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 the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 91 out of 100, up from 83.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.6 dB | 0.70 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 202 Hz | -2.8 dB | 0.87 |
| Peak | 696 Hz | +1.1 dB | 2.92 |
| Peak | 6,813 Hz | +2.0 dB | 1.65 |
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 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 49.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 198 Hz | -2.7 dB | 0.75 |
| Peak | 684 Hz | +1.2 dB | 2.61 |
| Peak | 6,823 Hz | +2.0 dB | 1.62 |
Studio flat 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 Studio flat match with this EQ: 91 out of 100, up from 29.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.6 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 193 Hz | -4.6 dB | 0.78 |
| Peak | 700 Hz | +1.0 dB | 3.38 |
| Peak | 2,556 Hz | +3.3 dB | 2.45 |
| Peak | 4,839 Hz | -1.6 dB | 6.00 |
| Peak | 7,362 Hz | +1.6 dB | 3.51 |
Warm target
Set a preamp of -1.1 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: 94 out of 100, up from 85.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.8 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 200 Hz | -2.6 dB | 0.93 |
| Peak | 702 Hz | +1.3 dB | 2.74 |
| Peak | 1,483 Hz | -0.9 dB | 2.71 |
| Peak | 4,419 Hz | -1.5 dB | 1.42 |
Bass target
Set a preamp of -4.4 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 Bass match with this EQ: 93 out of 100, up from 72.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.3 dB | 0.70 |
| High shelf | 10,000 Hz | -3.8 dB | 0.70 |
| Peak | 209 Hz | -2.9 dB | 0.97 |
| Peak | 700 Hz | +1.0 dB | 3.02 |
| Peak | 6,822 Hz | +2.0 dB | 1.64 |
Bright 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 median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 86 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | -1.0 dB | 0.70 |
| Peak | 198 Hz | -2.7 dB | 0.71 |
| Peak | 674 Hz | +1.1 dB | 2.69 |
| Peak | 5,496 Hz | +3.9 dB | 1.26 |
V-shaped 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 median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 84 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.0 dB | 0.70 |
| Peak | 215 Hz | -1.5 dB | 1.24 |
| Peak | 1,267 Hz | -1.3 dB | 4.36 |
| Peak | 5,345 Hz | +4.2 dB | 1.12 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Sonic Memory SM2 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 lumerion, recode and therollo9. Thanks to each of them for publishing their work.