Short answer: the Nightjar Singularity, though neither ranks well in its class. It ranks #1146 of 1291 in-ear headphones by sound quality, rated 2.1/5, at $1,675. The FiiO FA7S ranks #1170, rated 1.9/5, at $947.19, $727.81 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 1291 in-ear headphones; for better sound, the ThieAudio Monarch MKIII ranks #1 at $999.
The case for the Nightjar Singularity: About 5 dB more bass than the Harman target below 150 Hz, for listeners who want a fuller low end. Watch for: Treble about 3 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
The case for the FiiO FA7S: Six balanced armature drivers per side at 18 ohms and 111 dB/mW make it very easy to drive from a phone or a small dongle. The tradeoff: Crinacle’s measurement yields a preference score of just 48 with a 3.7 dB spread around the target, a poor tonal result at a flagship price.
Buy the Nightjar Singularity. It is rated higher for sound quality, and the $727.81 you would save on the FiiO FA7S does not close the gap.
Looking for alternatives? See the complete Headphones rankings.
About 5 dB more bass than the Harman target below 150 Hz, for listeners who want a fuller low end.
Nightjar Acoustics $1,675 eBay
Six balanced armature drivers per side at 18 ohms and 111 dB/mW make it very easy to drive from a phone or a small dongle.
Amazon $947.19 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
| Nightjar Singularity | FiiO FA7S | |
|---|---|---|
| Price | $1,675 | $947.19 |
| Ranked | #1146 of 1291 in In-Ear Headphones | #1170 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 51 (median of 10 squig.link measurements, calibrated to AutoEQ) | 48 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 3.31 dB standard deviation | 3.72 dB standard deviation |
| Tonal Tilt | -1.72 (negative is warmer, positive brighter) | -0.89 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+5.6 dB at 30 Hz) | - |
| Connection | Wired (3.5mm / 4.4mm) | Wired |
| Driver Type | Dynamic | Balanced armature |
| Drivers | 1 Dynamic (10mm bespoke) | 6 x balanced armature |
| Impedance | - | 18 ohms |
| Sensitivity | - | 111 dB/mW |
| Weight | - | 0 lbs (8.4 g) per earbud |
| Frequency Response | - | 10Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | - | No |
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