These sit in different size classes, so this is not a straight ranking comparison. The Shure Aonic 4 ranks #599 of 819 in-ear headphones by sound quality at $368.32; the Shure Aonic 50 ranks #133 of 407 over-ear headphones by sound quality.
The case for the Shure Aonic 4: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The catch: Presence sits about 5.7 dB low with a 9.6 dB dip near 5.9 kHz, so vocals and instruments lose some bite.
The case for the Shure Aonic 50: Measured response gives it a very good Harman preference score of 79 with a 2.57 dB spread. The tradeoff: Discontinued, so it is mainly found used.
One note: the Shure Aonic 50 is discontinued, but it still ranks #133 of 407 over-ear headphones by sound quality, ahead of most of what is still sold new, so it is worth considering used.
Buy the Shure Aonic 4 for a in-ear headphones, or the Shure Aonic 50 for a over-ear headphones instead.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Shure Aonic 4 | Shure Aonic 50 | |
|---|---|---|
| Price | $368.32 | Discontinued |
| Ranked | #599 of 819 in In-Ear Headphones | #133 of 407 in Over-Ear Headphones |
| Form Factor | In-ear | Over-ear |
| Connection | Wired | Bluetooth |
| Driver Type | Hybrid | Dynamic |
| Drivers | 1 x dynamic + 1 x balanced armature | 1 x 50mm dynamic |
| Impedance | 7 ohms | 39 ohms |
| Sensitivity | 106 dB/mW | 97.5 dB/mW |
| Frequency Response | 20Hz - 19kHz | 20Hz - 22kHz |
| Weight | 0 lbs (21.1 g) | 0.7 lbs (334 g) |
| Harman Preference Score | 64 (measured by crinacle, via AutoEQ) | 79 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.83 dB standard deviation | 2.57 dB standard deviation |
| Tonal Tilt | -0.59 (negative is warmer, positive brighter) | +0.17 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.2 dB at 30 Hz) |
| Back | - | Closed |
Related Headphone Comparisons
How Shure Aonic 50 compares with other leading options:
- Shure Aonic 3 vs Shure Aonic 4
- Shure Aonic 3 vs Shure Aonic 50
- Fosi Audio i5 vs Stax SR-X1
- HIFIMAN Arya Stealth Magnet Version vs Fosi Audio i5
- HIFIMAN Arya Stealth vs Fosi Audio i5
Prices on this page were last checked October 13, 2026 at 3:17 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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The Two Headphones In Full
Shure Aonic 4: $368.32 Amazon $368.32 eBay
Pros: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. It uses 1 x dynamic + 1 x balanced armature with an easy 7 ohm load.
Cons: Presence sits about 5.7 dB low with a 9.6 dB dip near 5.9 kHz, so vocals and instruments lose some bite. A 5.6 dB peak near 9.4 kHz can make cymbals and sibilance sound sharp. Sub-bass is 4 dB short at 30 Hz, so deep bass lacks rumble. A Harman score of 64 places it in the lower part of the in-ear rankings.
Full Shure Aonic 4 review and specifications →
| Released | 2020 (6 years ago) |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.83 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 x dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 19kHz |
| Harman Preference Score | 64 (measured by crinacle, via AutoEQ) |
| Impedance | 7 ohms |
| Sensitivity | 106 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) |
| Tonal Tilt | -0.59 (negative is warmer, positive brighter) |
| Weight | 0 lbs (21.1 g) |
EQ preset to match the Harman target
Set a preamp of -6.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.0 dB | 0.70 |
| Peak | 171 Hz | -3.5 dB | 0.73 |
| Peak | 6,951 Hz | +4.4 dB | 0.77 |
| Peak | 5,107 Hz | +3.0 dB | 3.00 |
| Peak | 1,456 Hz | -1.8 dB | 3.17 |
| High shelf | 10,000 Hz | +5.5 dB | 0.70 |
| Peak | 8,208 Hz | -2.1 dB | 1.72 |
| Peak | 829 Hz | +0.8 dB | 2.34 |
| Peak | 6,340 Hz | +1.3 dB | 6.00 |
| Peak | 3,309 Hz | -0.6 dB | 4.21 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Shure Aonic 50 Discontinued eBay
Pros: Measured response gives it a very good Harman preference score of 79 with a 2.57 dB spread. It uses 1 x 50mm dynamic.
Cons: Discontinued, so it is mainly found used. An 8.3 dB peak near 11.9 kHz can make cymbals and sibilance sound sharp. The 4.6 dB bass lift can sound boomy and mask midrange detail.
Full Shure Aonic 50 review and specifications →
| Released | Apr 2020 (6 years ago) |
|---|---|
| Back | Closed |
| Connection | Bluetooth |
| Deviation From Target | 2.57 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 50mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 20Hz - 22kHz |
| Harman Preference Score | 79 (measured by oratory1990, via AutoEQ) |
| Impedance | 39 ohms |
| Sensitivity | 97.5 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.2 dB at 30 Hz) |
| Tonal Tilt | +0.17 (negative is warmer, positive brighter) |
| Weight | 0.7 lbs (334 g) |
EQ preset to match the Harman target
Set a preamp of -5.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.8 dB | 0.70 |
| Peak | 471 Hz | +5.1 dB | 0.74 |
| Peak | 129 Hz | -6.0 dB | 0.68 |
| Peak | 5,309 Hz | -4.3 dB | 2.71 |
| Peak | 2,908 Hz | -3.6 dB | 5.04 |
| High shelf | 10,000 Hz | -1.6 dB | 0.70 |
| Peak | 1,894 Hz | -1.5 dB | 3.19 |
| Peak | 51 Hz | -1.3 dB | 2.33 |
| Peak | 78 Hz | +1.1 dB | 2.48 |
| Peak | 3,742 Hz | +2.0 dB | 6.00 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons