Short answer: a tie on sound quality. Both are rated 4.1/5 (#342 and #317 of 1291 in-ear headphones) at nearly the same price ($239.99 vs $239), so choose on features and fit.
What the AFUL Performer 5 Plus 2 does well: The median of 19 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.71 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural. The catch: Presence sits about 3.9 dB low with a 5 dB dip near 3.9 kHz, so vocals and instruments lose some bite.
The case for the AUNE Jasper: A single 10mm dynamic IEM with a preference score of 75 and every band from bass to upper mids within 1.5 dB of target. Watch for: Sub-bass sits about 2.5 dB under target, so the deepest synth and organ notes have a little less weight than the best tunings deliver.
Buy the AFUL Performer 5 Plus 2 or the AUNE Jasper on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
The median of 19 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.71 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural.
Amazon $239.99 eBay
A single 10mm dynamic IEM with a preference score of 75 and every band from bass to upper mids within 1.5 dB of target.
Amazon $239.00 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
| AFUL Performer 5 Plus 2 | AUNE Jasper | |
|---|---|---|
| Price | $239.99 | $239.00 |
| Ranked | #342 of 1291 in In-Ear Headphones | #317 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Tribrid | Dynamic |
| Drivers | 2 x dynamic + 4 x balanced armature + 1 x planar | 1 x 10mm dynamic |
| Impedance | 15 ohms | 32 ohms |
| Frequency Response | 10Hz - 35kHz (Manufacturer specified) | 5Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 75 (median of 19 squig.link measurements, calibrated to AutoEQ) | 75 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 1.71 dB standard deviation | 2.29 dB standard deviation |
| Tonal Tilt | -0.55 (negative is warmer, positive brighter) | +0.01 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.1 dB at 30 Hz) |
| Sensitivity | - | 102 dB/mW |
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 AFUL Performer 5 Plus 2 from aftersound, atechreviews, boizoff, bryaudioreviews, ducbloke, dvewlsh, flare, gadgetgenerations, gadgetrytech, hobbytalk, hu-fi, kuping-sensi, practiphile, pw, samreviews, silicagel, sl0the, soundcheck39, soundignity, superreview, theaudiostore and timmyv; the AUNE Jasper from achoreviews, aftersound, dchpgall, dentreviews, hbb and superreview, all via squig.link.
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