Short answer: the AFUL Performer 5 Plus 2. Both are rated 4.1/5 for sound quality (#342 and #348 of 1291 in-ear headphones), and the AFUL Performer 5 Plus 2 costs $239.99 against $250.99 for the Binary Dynaquattro, and with sound quality even, the cheaper one is the better buy.
The case for the AFUL Performer 5 Plus 2: 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. Watch for: Presence sits about 3.9 dB low with a 5 dB dip near 3.9 kHz, so vocals and instruments lose some bite.
Why pick the Binary Dynaquattro: Across 16 squig.link measurements this dynamic set earns a preference score of 74.7 with a smooth 1.71 dB deviation, one of the tidier results at its price. The tradeoff: A 5.4 dB dip near 6.1 kHz takes some edge off snare hits and consonants, and a 3.7 dB peak at 8.4 kHz right above it can make cymbals sound a little splashy.
Buy the AFUL Performer 5 Plus 2. Both are rated the same for sound quality, and it costs $11 less than the Binary Dynaquattro.
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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
Across 16 squig.link measurements this dynamic set earns a preference score of 74.7 with a smooth 1.71 dB deviation, one of the tidier results at its price.
HiFiGo $250.99 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
| AFUL Performer 5 Plus 2 | Binary Dynaquattro | |
|---|---|---|
| Price | $239.99 | $250.99 |
| Ranked | #342 of 1291 in In-Ear Headphones | #348 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 | - |
| Impedance | 15 ohms | 23 ohms |
| Frequency Response | 10Hz - 35kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 75 (median of 19 squig.link measurements, calibrated to AutoEQ) | 75 (median of 16 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.71 dB standard deviation | 1.71 dB standard deviation |
| Tonal Tilt | -0.55 (negative is warmer, positive brighter) | -0.65 (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 (+1.7 dB at 30 Hz) |
| Sensitivity | - | 111 dB/Vrms |
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 Binary Dynaquattro from aftersound, atechreviews, audioamigo, awsmdanny, eliseaudio, elrics, gadgetgenerations, jaytiss, practiphile, pw, silicagel, sl0the, soundignity, superreview, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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