Short answer: the Dita Project M. It ranks #912 of 1291 in-ear headphones by sound quality, rated 3.3/5, at $325; the Shure Aonic 4 ranks #950, rated 3.2/5, and costs $349, so there is not much of a tradeoff to weigh.
What the Dita Project M does well: Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. Watch for: Presence sits about 7 dB low with a 9.2 dB dip near 3.9 kHz, so vocals and instruments lose some bite.
Why pick the Shure Aonic 4: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The tradeoff: Presence sits about 5.7 dB low with a 9.6 dB dip near 5.9 kHz, so vocals and instruments lose some bite.
Buy the Dita Project M. It is rated higher for sound quality than the Shure Aonic 4 and costs less, which makes it the one to get unless you need something the other one does better.
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Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat.
Bloom Audio $325 eBay
Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural.
Amazon $349.00 eBayPrices 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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Specifications Side By Side
| Dita Project M | Shure Aonic 4 | |
|---|---|---|
| Price | $325 | $349.00 |
| Ranked | #912 of 1291 in In-Ear Headphones | #950 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | - |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Hybrid |
| Drivers | 1 x 9.8mm dynamic + 1 x balanced armature | 1 x dynamic + 1 x balanced armature |
| Impedance | 32 ohms | 7 ohms |
| Sensitivity | 107 dB/Vrms | 106 dB/mW |
| Harman Preference Score | 65 (median of 11 squig.link measurements, calibrated to AutoEQ) | 64 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.86 dB standard deviation | 2.83 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | -0.59 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 19kHz |
| Weight | - | 0 lbs (21.1 g) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the Dita Project M from aftersound, bloomaudio, csi-zone, ducbloke, eliseaudio, fahryst, gadgetgenerations, iemocean, jaytiss, kazi, lumerion, obodio, sl0the, soundignity, theaudiostore, therollo9, tonedeafmonk and treblewellxtended; the Shure Aonic 4 from aden, ekaudio and hu-fi, all via squig.link.
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