Short answer: the JCALLY Space. It ranks #534 of 1291 in-ear headphones by sound quality, rated 3.9/5, at $25; the ARTTI R3 ranks #600, rated 3.8/5, at $24.99. With prices this close, go by the sound-quality ranking rather than the cost.
Why pick the JCALLY Space: A budget single dynamic in-ear with a 10mm driver, a preference score of 72 and treble right on the Harman target. The catch: Sub-bass falls about 3.7 dB short at 30 Hz.
The case for the ARTTI R3: A very cheap single dynamic in-ear with a 71 Harman preference score and full sub-bass extension down to 20 Hz. Watch for: A 1.89 dB spread from the target still leaves some peaks and dips.
Buy the JCALLY Space. It is rated higher for sound quality, and the $0.01 saving on the ARTTI R3 is not enough to make up the difference.
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A budget single dynamic in-ear with a 10mm driver, a preference score of 72 and treble right on the Harman target.
Headphone Zone eBay
A very cheap single dynamic in-ear with a 71 Harman preference score and full sub-bass extension down to 20 Hz.
Amazon $24.99 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
| JCALLY Space | ARTTI R3 | |
|---|---|---|
| Price | $25 | $24.99 |
| Ranked | #534 of 1291 in In-Ear Headphones | #600 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Harman Preference Score | 72 (median of 3 squig.link measurements, calibrated to AutoEQ) | 71 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.17 dB standard deviation | 1.89 dB standard deviation |
| Tonal Tilt | +0.43 (negative is warmer, positive brighter) | -0.66 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.6 dB at 30 Hz) |
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 JCALLY Space from fernandagunsan, kuping-sensi and soundignity; the ARTTI R3 from ankramutt, audioamigo, riz and tonedeafmonk, all via squig.link.
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