Short answer: the DUNU Falcon Ultra. Both are rated 4.4/5 for sound quality (#141 and #164 of 1291 in-ear headphones), and the DUNU Falcon Ultra costs $214.99 against $239.99 for the Binary 1900, and with sound quality even, the cheaper one is the better buy.
Why pick the Binary 1900: In the median of 4 squig.link measurements it tracks the target closely from 20 Hz through 3 kHz, with every band from sub-bass to upper mids within 1 dB, for a preference score of 78.5. Watch for: A 5.8 dB dip near 5.7 kHz and a presence band about 4.1 dB below target take the edge off vocals and guitar attack, making some recordings sound distant.
What the DUNU Falcon Ultra does well: With 21 hobbyist measurements behind it on squig.link, the Falcon Ultra has a well established preference score of 78.5 and sub-bass that sits essentially on target down to 20 Hz. The tradeoff: The midbass lift spills slightly into the low mids, which run 1 dB high, so dense mixes can sound a little thick.
Buy the DUNU Falcon Ultra. Both are rated the same for sound quality, and it costs $25 less than the Binary 1900.
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In the median of 4 squig.link measurements it tracks the target closely from 20 Hz through 3 kHz, with every band from sub-bass to upper mids within 1 dB, for a preference score of 78.5.
Amazon $239.99 eBay
With 21 hobbyist measurements behind it on squig.link, the Falcon Ultra has a well established preference score of 78.5 and sub-bass that sits essentially on target down to 20 Hz.
HiFiGo $214.99 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
| Binary 1900 | DUNU Falcon Ultra | |
|---|---|---|
| Price | $239.99 | $214.99 |
| Ranked | #164 of 1291 in In-Ear Headphones | #141 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 17 squig.link measurements, calibrated to AutoEQ) | 79 (median of 21 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.59 dB standard deviation | 1.55 dB standard deviation |
| Tonal Tilt | -0.35 (negative is warmer, positive brighter) | -0.28 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 6mm passive radiator + 4 x balanced armature | 1 x 10.7mm dynamic |
| Impedance | 10 ohms | 16 ohms |
| Sensitivity | 124 dB SPL/V | 108 dB |
| Frequency Response | 8Hz - 40kHz (Manufacturer specified) | 5Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | No | No |
| Weight | - | 0 lbs (10 g) per earbud |
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 Binary 1900 from aftersound, animagus, atechreviews, audioamigo, bassaudio, boizoff, dchpgall, elrics, iemocean, jaytiss, kazi, kuping-sensi, practiphile, precog, soundcheck39, superreview and tonedeafmonk; the DUNU Falcon Ultra from achoreviews, adri-n, aftersound, boizoff, cqtek, freeryder05, gadgetgenerations, hadoe, hobbytalk, ianfann, jacstone, jaytiss, listener, mmagtech, nymz, practiphile, pw, regancipher, sl0the, soundignity, superreview, timmyv, tonedeafmonk and vsg, all via squig.link.
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