Short answer: the Ucotech RE-3 Pro. It ranks #325 of 1291 in-ear headphones by sound quality, rated 4.1/5, at $119; the Agasound Sublimation ranks #437, rated 4.0/5, at $115. The price gap is small enough that the sound-quality ranking should decide it.
What the Ucotech RE-3 Pro does well: The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.72 dB spread. The tradeoff: A 5.4 dB peak near 11.9 kHz can make cymbals and sibilance sound sharp.
Why pick the Agasound Sublimation: A broadly balanced tuning with a preference score of 74 against the Harman target. The catch: Treble about 3 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the Ucotech RE-3 Pro. It is rated higher for sound quality, and the $4 you would save on the Agasound Sublimation does not close the gap.
Looking for alternatives? See the complete Headphones rankings.
The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.72 dB spread.
Bloom Audio $119.00 eBay
A broadly balanced tuning with a preference score of 74 against the Harman target.
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Specifications Side By Side
| Ucotech RE-3 Pro | Agasound Sublimation | |
|---|---|---|
| Price | $119.00 | $115 |
| Ranked | #325 of 1291 in In-Ear Headphones | #437 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 75 (median of 3 squig.link measurements, calibrated to AutoEQ) | 74 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.72 dB standard deviation | 2.18 dB standard deviation |
| Tonal Tilt | -0.53 (negative is warmer, positive brighter) | -0.16 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 30 ohms | - |
| Sensitivity | 105 dB/mW | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| Built-in Microphone | No | - |
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 Ucotech RE-3 Pro from eliseaudio, elrics and superreview; the Agasound Sublimation from aftersound, bassaudio, elrics and fernandagunsan, all via squig.link.
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