Short answer: the EarFun Air Pro 4. It ranks #515 of 1291 in-ear headphones by sound quality, rated 3.9/5, at $79.99; the Rose Technics Star City 5 Pro ranks #582, rated 3.8/5, at $79.99. Close enough in price that the sound-quality gap is the deciding factor.
What the EarFun Air Pro 4 does well: The median of 5 hobbyist measurements gives it a solid Harman preference score of 72 with a 1.98 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural. The tradeoff: Its 1.98 dB spread is less even than the best measured sets.
The case for the Rose Technics Star City 5 Pro: The median of 10 hobbyist measurements gives it a solid Harman preference score of 71 with a 2.19 dB spread, and its mids sit within about 1.5 dB of target, so vocals and instruments sound natural. The tradeoff: Presence sits about 3.5 dB low with a 6 dB dip near 5.1 kHz, so vocals and instruments lose some bite.
Buy the EarFun Air Pro 4. It is rated higher for sound quality than the Rose Technics Star City 5 Pro at the same price, which makes it the one to get unless you need something the other one does better.
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The median of 5 hobbyist measurements gives it a solid Harman preference score of 72 with a 1.98 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural.
Amazon $79.99 eBay
The median of 10 hobbyist measurements gives it a solid Harman preference score of 71 with a 2.19 dB spread, and its mids sit within about 1.5 dB of target, so vocals and instruments sound natural.
Amazon $79.99 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
| EarFun Air Pro 4 | Rose Technics Star City 5 Pro | |
|---|---|---|
| Price | $79.99 | $79.99 |
| Ranked | #515 of 1291 in In-Ear Headphones | #582 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 72 (median of 5 squig.link measurements, calibrated to AutoEQ) | 71 (median of 10 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.98 dB standard deviation | 2.19 dB standard deviation |
| Tonal Tilt | -0.73 (negative is warmer, positive brighter) | +0.35 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.4 dB at 30 Hz) |
| Connection | True wireless | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic | 1 x dynamic + 2 x balanced armature |
| Active Noise Cancelling | Yes | - |
| Battery Life | 11 hours (52 with case, Manufacturer specified) | - |
| Bluetooth Version | 5.4 | - |
| Bluetooth Codecs | SBC, AAC, aptX, aptX Lossless, LDAC | - |
| Built-in Microphone | Yes | - |
| IP Rating | IPX5 | - |
| Impedance | - | 24 ohms |
| Sensitivity | - | 104 dB/mW |
| Frequency Response | - | 10Hz - 25kHz |
| Weight | - | 0.1 lbs (28 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 EarFun Air Pro 4 from atechreviews, dhrme, fernandagunsan, regancipher and soundignity; the Rose Technics Star City 5 Pro from aftersound, arn, audioamigo, boizoff, cqtek, hobbytalk, lumerion, mmagtech, pw, soundcheck39, soundignity, theaudiostore, treblewellxtended and vortexreviews, all via squig.link.
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